diff --git a/inc/Engine/Preload/Controller/PreloadUrl.php b/inc/Engine/Preload/Controller/PreloadUrl.php
index 551e63cfb1..a085e0ad8c 100755
--- a/inc/Engine/Preload/Controller/PreloadUrl.php
+++ b/inc/Engine/Preload/Controller/PreloadUrl.php
@@ -1,4 +1,5 @@
 <?php
+declare(strict_types=1);
 
 namespace WP_Rocket\Engine\Preload\Controller;
 
@@ -56,16 +57,20 @@ public function __construct( Options_Data $options, Queue $queue, Cache $rocket_
 	 * Preload an url.
 	 *
 	 * @param string $url url to preload.
+	 *
 	 * @return void
 	 */
 	public function preload_url( string $url ) {
-
 		$is_mobile = $this->options->get( 'do_caching_mobile_files', false );
+
 		if ( $this->is_already_cached( $url ) && ( ! $is_mobile || $this->is_already_cached( $url, true ) ) ) {
 			$this->query->make_status_complete( $url );
 			return;
 		}
 
+		// Should we perform a duration check?
+		$check_duration = ( false === get_transient( 'rocket_preload_check_duration' ) ) ? true : false;
+
 		$requests = [
 			[
 				'url'       => $url,
@@ -117,6 +122,11 @@ public function preload_url( string $url ) {
 				]
 			);
 
+			if ( $check_duration ) {
+				$headers['blocking'] = true;
+				$headers['timeout']  = 20;
+			}
+
 			/**
 			 * Filters the arguments for the preload request.
 			 *
@@ -131,19 +141,42 @@ public function preload_url( string $url ) {
 				return;
 			}
 
+			if ( $check_duration ) {
+				$start = microtime( true );
+			}
+
 			wp_safe_remote_get(
 				user_trailingslashit( $request['url'] ),
 				$headers
 			);
+
+			if ( $check_duration ) {
+				$duration = ( microtime( true ) - $start ); // Duration of the request.
+			}
+
 			/**
 			 * Filter the delay between each preload request.
 			 *
 			 * @param float $delay_between the defined delay.
-			 * @returns float
 			 */
 			$delay_between = apply_filters( 'rocket_preload_delay_between_requests', 500000 );
 
 			usleep( $delay_between );
+
+			if ( ! $check_duration ) {
+				continue;
+			}
+
+			$duration_transient = get_transient( 'rocket_preload_previous_requests_durations' );
+			$average_duration   = ( false !== $duration_transient ) ? $duration_transient : 0;
+
+			// Update average duration.
+			$average_duration = ( $average_duration <= 0 ) ? $duration : ( $average_duration * 0.7 + $duration * 0.3 );
+
+			set_transient( 'rocket_preload_previous_requests_durations', $average_duration, 5 * MINUTE_IN_SECONDS );
+
+			set_transient( 'rocket_preload_check_duration', $duration, MINUTE_IN_SECONDS ); // Don't check request duration for 1 minute.
+			$check_duration = false;
 		}
 	}
 
@@ -175,10 +208,37 @@ protected function get_mobile_user_agent_prefix() {
 	 * @return void
 	 */
 	public function process_pending_jobs() {
-
 		$pending_actions = $this->queue->get_pending_preload_actions();
 
-		$count = ( (int) apply_filters( 'rocket_preload_cache_pending_jobs_cron_rows_count', 45 ) ) - count( $pending_actions );
+		// Retrieve batch size limits and request timing estimation.
+		/**
+		 * Get the number of pending cron job
+		 *
+		 * @param int $args Maximum number of job size.
+		 */
+		$max_batch_size = ( (int) apply_filters( 'rocket_preload_cache_pending_jobs_cron_rows_count', 45 ) ) - count( $pending_actions );
+
+		/**
+		 * Get the number of in progress cron job
+		 *
+		 * @param int $args Minimum number of job size.
+		 */
+		$min_batch_size = ( (int) apply_filters( 'rocket_preload_cache_min_in_progress_jobs_count', 5 ) );
+
+		$average_duration = get_transient( 'rocket_preload_previous_requests_durations' );
+
+		/**
+		 * Estimate batch size based on request duration.
+		 * In case no estimation or there is an issue with the value use $min_batch_size.
+		*/
+		$next_batch_size = (int) ( ! $average_duration ? $min_batch_size : round( -5 * $average_duration + 55 ) );
+
+		// Limit next_batch_size.
+		$next_batch_size = max( $next_batch_size, $min_batch_size ); // Not lower than 5.
+		$next_batch_size = min( $next_batch_size, $max_batch_size ); // Not higher than 45.
+		$next_batch_size = max( $next_batch_size, 0 ); // Not lower than 0.
+
+		// Get all in-progress jobs with request sent and no results.
 		/**
 		 * Set the delay before an in-progress row is considered as outdated.
 		 *
@@ -193,11 +253,11 @@ public function process_pending_jobs() {
 			 * @param int $count number of rows in batches.
 			 * @return int
 			 */
-			(int) ( $count / 15 )
+			(int) ( $max_batch_size / 15 )
 		);
-
 		$stuck_rows = $this->query->get_outdated_in_progress_jobs( $delay );
 
+		// Make sure the request has been sent for those jobs.
 		$stuck_rows = array_filter(
 			$stuck_rows,
 			function ( $row ) use ( $pending_actions ) {
@@ -210,10 +270,13 @@ function ( $row ) use ( $pending_actions ) {
 			}
 			);
 
+		// Make those hanging jobs failed.
 		foreach ( $stuck_rows as $row ) {
-			$this->query->make_status_failed( $row->id );
+			$this->query->make_status_failed( (int) $row->id );
 		}
-		$rows = $this->query->get_pending_jobs( $count );
+
+		// Add new jobs in progress.
+		$rows = $this->query->get_pending_jobs( $next_batch_size );
 		foreach ( $rows as $row ) {
 
 			if ( $this->is_excluded_by_filter( $row->url ) ) {
@@ -221,7 +284,7 @@ function ( $row ) use ( $pending_actions ) {
 				continue;
 			}
 
-			$this->query->make_status_inprogress( $row->id );
+			$this->query->make_status_inprogress( (int) $row->id );
 			$this->queue->add_job_preload_job_preload_url_async( $row->url );
 
 		}
diff --git a/inc/Engine/WPRocketUninstall.php b/inc/Engine/WPRocketUninstall.php
index 36f29647b5..87af2ea745 100644
--- a/inc/Engine/WPRocketUninstall.php
+++ b/inc/Engine/WPRocketUninstall.php
@@ -80,6 +80,8 @@ class WPRocketUninstall {
 		'wp_rocket_pricing_timeout',
 		'wp_rocket_pricing_timeout_active',
 		'rocket_get_refreshed_fragments_cache',
+		'rocket_preload_previous_requests_durations',
+		'rocket_preload_check_duration',
 		'wpr_user_information_timeout_active',
 		'wpr_user_information_timeout',
 	];
diff --git a/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php b/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php
index 691d60c026..ec5904278a 100644
--- a/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php
+++ b/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php
@@ -1,7 +1,8 @@
 <?php
 return [
-	'alreadyPresentShouldDoNothing' => [
+	'shouldDoNothingWhenAlreadyCached' => [
 		'config' => [
+			'transient_check_duration' => 500,
 			'url' => 'url',
 			'cache_exists' => true,
 			'cache_mobile' => false,
@@ -12,12 +13,13 @@
 					'timeout'  => 0.01,
 					'user-agent' => 'WP Rocket/Preload',
 					'sslverify' => false,
-				]
+				],
 			],
-		]
+		],
 	],
-	'mobileNotActivatedShouldPreloadOnlyOnce' => [
+	'shouldPreloadOnlyOnceWhenMobileCacheDisabled' => [
 		'config' => [
+			'transient_check_duration' => 500,
 			'url' => 'url',
 			'cache_exists' => false,
 			'cache_mobile' => false,
@@ -28,12 +30,13 @@
 					'timeout'  => 0.01,
 					'user-agent' => 'WP Rocket/Preload',
 					'sslverify' => false,
-				]
+				],
 			],
-		]
+		],
 	],
-	'mobileActivatedShouldPreloadTwice' => [
+	'ShouldPreloadTwiceWhenMobileCacheEnabled' => [
 		'config' => [
+			'transient_check_duration' => 500,
 			'url' => 'url',
 			'cache_exists' => false,
 			'cache_mobile' => true,
@@ -44,7 +47,7 @@
 					'timeout'  => 0.01,
 					'user-agent' => 'WP Rocket/Preload',
 					'sslverify' => false,
-				]
+				],
 			],
 			'request_mobile' => [
 				'config' => [
@@ -52,8 +55,25 @@
 					'timeout'  => 0.01,
 					'user-agent' => 'user_agent',
 					'sslverify' => false,
-				]
+				],
 			],
-		]
-	]
+		],
+	],
+	'shouldPreloadOnlyOnceWhenMobileCacheDisabledAndCheckDuration' => [
+		'config' => [
+			'transient_check_duration' => false,
+			'url' => 'url',
+			'cache_exists' => false,
+			'cache_mobile' => false,
+			'user_agent' => 'user_agent',
+			'request' => [
+				'config' => [
+					'blocking' => true,
+					'timeout'  => 20,
+					'user-agent' => 'WP Rocket/Preload',
+					'sslverify' => false,
+				],
+			],
+		],
+	],
 ];
diff --git a/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php b/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php
index 6d97f12d37..011a079288 100644
--- a/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php
+++ b/tests/Fixtures/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php
@@ -41,34 +41,35 @@
 	'shouldPassJobsInPending' => [
 		'config' => [
 			'outdated_jobs' => [
-				$outdated_row
+				$outdated_row,
 			],
 			'excluded' => [
-			false,
-			false,
-			true,
+				false,
+				false,
+				true,
 			],
-			'rows' => 101,
+			'rows' => 5,
 			'jobs' => [
 				$row1,
 				$row2,
-				$row3
-			]
+				$row3,
+			],
+			'transient' => 0,
 		],
 		'expected' => [
 			'outdated_jobs_id' => [
-				[14]
+				[ 14 ],
 			],
 			'job_ids' => [
-				[10],
-				[11],
+				[ 10 ],
+				[ 11 ],
 			],
 			'job_urls' => [
 				'http://example1',
 				'http://example2',
 			],
 			'job_deleted' =>
-				['http://example3'],
-		]
+				[ 'http://example3' ],
+		],
 	],
 ];
diff --git a/tests/Fixtures/inc/Engine/Preload/Cron/Subscriber/processPendingUrls.php b/tests/Fixtures/inc/Engine/Preload/Cron/Subscriber/processPendingUrls.php
index 69225f2e07..d364f77779 100644
--- a/tests/Fixtures/inc/Engine/Preload/Cron/Subscriber/processPendingUrls.php
+++ b/tests/Fixtures/inc/Engine/Preload/Cron/Subscriber/processPendingUrls.php
@@ -106,7 +106,7 @@
 	],
 	'InProgressShouldNotExceedMaxQueue' => [
 		'config' => [
-			'rocket_preload_cache_pending_jobs_cron_rows_count' => 3,
+			'rocket_preload_cache_pending_jobs_cron_rows_count' => 5,
 			'manual_preload' => true,
 			'rocket_preload_outdated' => 1000,
 			'rows' => [
@@ -120,7 +120,7 @@
 				],
 				[
 					'url' => 'http://example.org/test3',
-					'status' => 'pending'
+					'status' => 'in-progress'
 				],
 				[
 					'url' => 'http://example.org/test4',
@@ -147,11 +147,11 @@
 				],
 				[
 					'url' => 'http://example.org/test3',
-					'status' => 'pending'
+					'status' => 'in-progress'
 				],
 				[
 					'url' => 'http://example.org/test4',
-					'status' => 'pending'
+					'status' => 'in-progress'
 				],
 				[
 					'url' => 'http://example.org/test5',
@@ -181,7 +181,7 @@
 					],
 				],
 				[
-					'exists' => false,
+					'exists' => true,
 					'args' => [
 						'hook'   => 'rocket_preload_job_preload_url',
 						'args' => ['http://example.org/test4']
diff --git a/tests/Integration/inc/Engine/WPRocketUninstall/uninstall.php b/tests/Integration/inc/Engine/WPRocketUninstall/uninstall.php
index 8bf3c1f7ba..1e88e42d13 100644
--- a/tests/Integration/inc/Engine/WPRocketUninstall/uninstall.php
+++ b/tests/Integration/inc/Engine/WPRocketUninstall/uninstall.php
@@ -45,6 +45,8 @@ class Test_Uninstall extends FilesystemTestCase {
 		'rocket_preload_complete'                         => null,
 		'rocket_preload_complete_time'                    => null,
 		'rocket_preload_errors'                           => null,
+		'rocket_preload_previous_requests_durations'      => null,
+		'rocket_preload_check_duration'                   => null,
 		'rocket_database_optimization_process'            => null,
 		'rocket_database_optimization_process_complete'   => null,
 		'rocket_hide_deactivation_form'                   => null,
diff --git a/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php b/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php
index abc2eee2bf..ae26f31e89 100644
--- a/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php
+++ b/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/preloadUrl.php
@@ -1,70 +1,110 @@
 <?php
+declare(strict_types=1);
 
 namespace WP_Rocket\Tests\Unit\inc\Engine\Preload\Controller\PreloadUrl;
 
+use Brain\Monkey\Functions;
 use Mockery;
-use Mockery\Mock;
 use WP_Filesystem_Direct;
 use WP_Rocket\Admin\Options_Data;
-use WP_Rocket\Engine\Preload\Controller\PreloadUrl;
-use WP_Rocket\Engine\Preload\Controller\Queue;
+use WP_Rocket\Engine\Preload\Controller\{PreloadUrl, Queue};
 use WP_Rocket\Engine\Preload\Database\Queries\Cache;
 use WP_Rocket\Tests\Unit\TestCase;
-use Brain\Monkey\Functions;
-use Brain\Monkey\Filters;
 
 /**
  * Test class covering \WP_Rocket\Engine\Preload\Controller\PreloadUrl::preload_url
- * @group  Preload
+ *
+ * @group Preload
  */
-class Test_PreloadUrl extends TestCase
-{
+class Test_PreloadUrl extends TestCase {
 	protected $queue;
 	protected $query;
 	protected $options;
 	protected $controller;
 	protected $file_system;
 
-	protected function setUp(): void
-	{
+	protected function setUp(): void {
 		parent::setUp();
-		$this->options = Mockery::mock(Options_Data::class);
-		$this->query = $this->createMock(Cache::class);
-		$this->queue = Mockery::mock(Queue::class);
-		$this->file_system = Mockery::mock(WP_Filesystem_Direct::class);
-		$this->controller = Mockery::mock(PreloadUrl::class . '[get_mobile_user_agent_prefix,is_already_cached]',
-			[$this->options,
-			$this->queue, $this->query, $this->file_system])->shouldAllowMockingProtectedMethods();
+
+		$this->options     = Mockery::mock( Options_Data::class );
+		$this->query       = $this->createMock( Cache::class );
+		$this->queue       = Mockery::mock( Queue::class );
+		$this->file_system = Mockery::mock( WP_Filesystem_Direct::class );
+		$this->controller  = Mockery::mock( PreloadUrl::class . '[get_mobile_user_agent_prefix,is_already_cached]',
+			[
+				$this->options,
+				$this->queue,
+				$this->query,
+				$this->file_system,
+			]
+		)->shouldAllowMockingProtectedMethods();
 	}
 
 	/**
 	 * @dataProvider configTestData
 	 */
-	public function testShouldDoAsExpected($config) {
-		$this->options->expects()->get('do_caching_mobile_files', false)->andReturn($config['cache_mobile']);
-		$this->controller->expects()->is_already_cached($config['url'])->andReturn($config['cache_exists']);
-		$this->configureRequest($config);
-		$this->configureMobileRequest($config);
-		$this->controller->preload_url($config['url']);
-	}
+	public function testShouldDoAsExpected( $config ) {
+		Functions\expect( 'get_transient' )
+			->atMost()
+			->once()
+			->with( 'rocket_preload_check_duration' )
+			->andReturn( $config['transient_check_duration'] );
 
-	protected function configureRequest($config) {
-		if($config['cache_exists']) {
-			return;
+		$this->options->expects()->get( 'do_caching_mobile_files', false )
+			->andReturn( $config['cache_mobile'] );
+		$this->controller->expects()->is_already_cached( $config['url'] )
+			->andReturn( $config['cache_exists'] );
+
+		$this->expectDesktopRequest( $config );
+		$this->expectMobileRequest( $config );
+
+		if ( false === $config['transient_check_duration'] ) {
+			Functions\expect( 'get_transient' )
+				->atMost()
+				->once()
+				->with( 'rocket_preload_previous_requests_durations' )
+				->andReturn( false );
+
+			Functions\expect( 'set_transient' )
+				->atMost()
+				->once()
+				->with( 'rocket_preload_previous_requests_durations', Mockery::type( 'int' ), 300 );
+
+			Functions\expect( 'set_transient' )
+				->atMost()
+				->once()
+				->with( 'rocket_preload_check_duration', Mockery::type( 'int' ), 60 );
 		}
 
-		Functions\expect('wp_safe_remote_get')->with($config['url'] . '/', $config['request']['config']);
+		$this->controller->preload_url( $config['url'] );
 	}
 
-	protected function configureMobileRequest($config) {
-		if($config['cache_exists']) {
+	protected function expectDesktopRequest( $config ) {
+		if ( $config['cache_exists'] ) {
+			Functions\expect( 'wp_safe_remote_get' )
+			->with( $config['url'] . '/', $config['request']['config'] )
+			->never();
+
 			return;
 		}
 
-		if(! $config['cache_mobile']) {
+		Functions\expect( 'wp_safe_remote_get' )
+			->with( $config['url'] . '/', $config['request']['config'] );
+	}
+
+	protected function expectMobileRequest( $config ) {
+		if (
+			$config['cache_exists']
+			||
+			! $config['cache_mobile']
+		) {
 			return;
 		}
-		$this->controller->expects()->get_mobile_user_agent_prefix()->andReturn($config['user_agent']);
-		Functions\expect('wp_safe_remote_get')->with($config['url'] . '/', $config['request_mobile']['config']);
+
+		$this->controller->expects()->get_mobile_user_agent_prefix()
+			->andReturn( $config['user_agent'] );
+
+		Functions\expect( 'wp_safe_remote_get' )
+			->with( $config['url'] . '/', $config['request_mobile']['config'] );
 	}
 }
diff --git a/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php b/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php
index 80601709f8..a2df1ebe50 100644
--- a/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php
+++ b/tests/Unit/inc/Engine/Preload/Controller/PreloadUrl/processPendingJobs.php
@@ -1,54 +1,77 @@
 <?php
+declare(strict_types=1);
 
 namespace WP_Rocket\Tests\Unit\inc\Engine\Preload\Controller\PreloadUrl;
 
+use Brain\Monkey\{Filters, Functions};
 use Mockery;
 use WP_Filesystem_Direct;
 use WP_Rocket\Admin\Options_Data;
-use WP_Rocket\Engine\Preload\Controller\PreloadUrl;
-use WP_Rocket\Engine\Preload\Controller\Queue;
+use WP_Rocket\Engine\Preload\Controller\{PreloadUrl, Queue};
 use WP_Rocket\Engine\Preload\Database\Queries\Cache;
-use WP_Rocket\Engine\Preload\Database\Queries\RocketCache;
 use WP_Rocket\Tests\Unit\TestCase;
-use Brain\Monkey\Filters;
 
 /**
  * Test class covering \WP_Rocket\Engine\Preload\Controller\PreloadUrl::process_pending_jobs
- * @group  Preload
+ *
+ * @group Preload
  */
-class Test_processPendingJobs extends TestCase
-{
+class TestProcessPendingJobs extends TestCase {
 	protected $queue;
 	protected $query;
 	protected $options;
 	protected $controller;
 	protected $file_system;
 
-	protected function setUp(): void
-	{
+	protected function setUp(): void {
 		parent::setUp();
-		$this->options = Mockery::mock(Options_Data::class);
-		$this->query = $this->createMock(Cache::class);
-		$this->queue = Mockery::mock(Queue::class);
-		$this->file_system = Mockery::mock(WP_Filesystem_Direct::class);
-		$this->controller = Mockery::mock( PreloadUrl::class . '[is_excluded_by_filter]' ,  [$this->options, $this->queue, $this->query, $this->file_system])->shouldAllowMockingProtectedMethods();
+
+		$this->options     = Mockery::mock( Options_Data::class );
+		$this->query       = $this->createMock( Cache::class );
+		$this->queue       = Mockery::mock( Queue::class );
+		$this->file_system = Mockery::mock( WP_Filesystem_Direct::class );
+		$this->controller  = Mockery::mock( PreloadUrl::class . '[is_excluded_by_filter]', [ $this->options, $this->queue, $this->query, $this->file_system ] )->shouldAllowMockingProtectedMethods();
 	}
 
 	/**
 	 * @dataProvider configTestData
 	 */
-	public function testShouldDoAsExpected($config, $expected) {
-
-		$this->queue->expects()->get_pending_preload_actions()->andReturn([]);
-		Filters\expectApplied('rocket_preload_cache_pending_jobs_cron_rows_count')->with(100)->andReturn($config['rows']);
-		$this->query->expects(self::once())->method( 'get_outdated_in_progress_jobs' )->with()->willReturn($config['outdated_jobs']);
-		$this->query->expects(self::atLeastOnce())->method('make_status_failed')->withConsecutive(...$expected['outdated_jobs_id']);
-		$this->query->expects(self::once())->method('get_pending_jobs')->with($config['rows'])->willReturn($config['jobs']);
-		$this->query->expects(self::atLeastOnce())->method('make_status_inprogress')->withConsecutive(...$expected['job_ids']);
-		$this->query->expects(self::atLeast(0))->method('delete_by_url')->withConsecutive($expected['job_deleted']);
-		$this->controller->shouldReceive('is_excluded_by_filter')->zeroOrMoreTimes()->andReturnValues($config['excluded']);
-		foreach ($expected['job_urls'] as $url) {
-			$this->queue->expects()->add_job_preload_job_preload_url_async( $url );
+	public function testShouldDoAsExpected( $config, $expected ) {
+		Functions\when( 'get_transient' )
+			->justReturn( $config['transient'] );
+
+		$this->queue->expects()->get_pending_preload_actions()
+			->andReturn( [] );
+
+		Filters\expectApplied( 'rocket_preload_cache_pending_jobs_cron_rows_count' )
+			->with( 100 )
+			->andReturn( $config['rows'] );
+
+		$this->query->expects( self::once() )
+			->method( 'get_outdated_in_progress_jobs' )
+			->with()
+			->willReturn( $config['outdated_jobs'] );
+		$this->query->expects( self::atLeastOnce() )
+			->method( 'make_status_failed' )
+			->withConsecutive( ...$expected['outdated_jobs_id'] );
+		$this->query->expects( self::once() )
+			->method( 'get_pending_jobs' )
+			->with( $config['rows'] )
+			->willReturn( $config['jobs'] );
+		$this->query->expects( self::atLeastOnce() )
+			->method( 'make_status_inprogress' )
+			->withConsecutive( ...$expected['job_ids'] );
+		$this->query->expects( self::atLeast( 0 ) )
+			->method( 'delete_by_url' )
+			->withConsecutive( $expected['job_deleted'] );
+
+		$this->controller->shouldReceive( 'is_excluded_by_filter' )
+			->zeroOrMoreTimes()
+			->andReturnValues( $config['excluded'] );
+
+		foreach ( $expected['job_urls'] as $url ) {
+			$this->queue->expects()
+			->add_job_preload_job_preload_url_async( $url );
 		}
 
 		$this->controller->process_pending_jobs();