diff --git a/Source/IGListAdapterUpdater.m b/Source/IGListAdapterUpdater.m
index 130f9a81..464353f8 100644
--- a/Source/IGListAdapterUpdater.m
+++ b/Source/IGListAdapterUpdater.m
@@ -264,7 +264,7 @@ willPerformBatchUpdatesWithCollectionView:collectionView
     };
 
     if (IGListExperimentEnabled(experiments, IGListExperimentBackgroundDiffing)) {
-        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+        dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INITIATED, 0), ^{
             IGListIndexSetResult *result = performDiff();
             dispatch_async(dispatch_get_main_queue(), ^{
                 performUpdate(result);