diff --git a/src/main/java/eu/openaire/urls_controller/components/ScheduledTasks.java b/src/main/java/eu/openaire/urls_controller/components/ScheduledTasks.java
index 480a2b8..3df8adc 100644
--- a/src/main/java/eu/openaire/urls_controller/components/ScheduledTasks.java
+++ b/src/main/java/eu/openaire/urls_controller/components/ScheduledTasks.java
@@ -66,8 +66,9 @@ public class ScheduledTasks {
     }
 
 
-    @Scheduled(initialDelay = 1_800_000, fixedDelay = 1_800_000)  // Execute this method 30 mins from the start and 30 mins after each last execution, in order for some tasks to have been gathered.
-    //@Scheduled(initialDelay = 20_000, fixedDelay = 20_000)    // Just for testing (every 20 secs).
+    @Scheduled(initialDelay = 1_800_000, fixedDelay = 900_000)  // Execute this method 30 mins from the start and 15 mins after each last execution, in order for some tasks to have been gathered.
+    //@Scheduled(initialDelay = 60_000, fixedDelay = 20_000)    // Just for testing (every 20 secs).
+    // The initial delay is larger, because we have to wait some time for at least one worker to finish retrieving the full-texts from thousands of publications, whereas, later we will have a lot of workerReports waiting to be processed.
     public void executeBackgroundTasks()
     {
         List<Callable<Boolean>> tempList = new ArrayList<>(UrlsController.backgroundCallableTasks);   // Copy the list in order to know what was executed.
@@ -76,7 +77,7 @@ public class ScheduledTasks {
         if ( numOfTasks == 0 )
             return;
 
-        // Immediately delete the selected tasks form the global list, so that if these tasks are not finished before the scheduler runs again, they will not be re-executed.
+        // Immediately delete the selected tasks form the global list, so that if these tasks are not finished before the scheduler runs again, they will not be re-processed.
         for ( Callable<Boolean> selectedTask : tempList )
             UrlsController.backgroundCallableTasks.remove(selectedTask);