Update only 5 on cron.

README.txt

@@ -88,7 +88,7 @@ Description: Execution time for a queue worker, only effective if used with
              drupal_queue.
 
 Name:        feeds_schedule_num
-Default:     10
+Default:     5
              200 if drupal_queue is enabled
 Description: The number of feeds to refresh on cron time.
              If drupal_queue is enabled, the maximum number of feeds to move to

includes/FeedsScheduler.inc

@@ -112,7 +112,7 @@ class FeedsScheduler implements IFeedsScheduler {
     // parameters accordingly.
     if ($importers = feeds_importer_load_all()) {
       $use_queue = module_exists('drupal_queue');
-      $num = variable_get('feeds_schedule_num', $use_queue ? 200 : 10);
+      $num = variable_get('feeds_schedule_num', $use_queue ? 200 : 5);
       $num = $num ? $num : 1;
 
       // Iterate over feed configurations, pick $num feeds for each