WinGui: Performance Optimisation to the summary tab. Don't request previews when previews are turned off. Also thrown the delayed action processor on to avoid doing unnecessary work when bulk adding to the queue. #3117

Queue add should be near instant now.

2 files changed, 7 insertions, 2 deletions

diff --git a/win/CS/HandBrakeWPF/Services/Queue/QueueService.cs b/win/CS/HandBrakeWPF/Services/Queue/QueueService.cs
index 44e2eb31a..7789a14fd 100644
--- a/win/CS/HandBrakeWPF/Services/Queue/QueueService.cs
+++ b/win/CS/HandBrakeWPF/Services/Queue/QueueService.cs
@@ -575,7 +575,7 @@ namespace HandBrakeWPF.Services.Queue
         {
             try
             {
-                delayedQueueBackupProcessor.PerformTask(() => this.BackupQueue(string.Empty), 1000);
+                delayedQueueBackupProcessor.PerformTask(() => this.BackupQueue(string.Empty), 200);
             }
             catch (Exception)
             {
diff --git a/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs b/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs
index 544956916..d07d4187d 100644
--- a/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs
+++ b/win/CS/HandBrakeWPF/ViewModels/SummaryViewModel.cs
@@ -52,6 +52,8 @@ namespace HandBrakeWPF.ViewModels
 
         private bool showPreview;
 
+        private DelayedActionProcessor previewDelayProcessor = new DelayedActionProcessor();
+
         public SummaryViewModel(IScan scanService, IUserSettingService userSettingService)
         {
             this.scanService = scanService;
@@ -390,7 +392,10 @@ namespace HandBrakeWPF.ViewModels
             }
 
             this.PopulateSummaryTab();
-            this.UpdatePreviewFrame();
+            if (this.ShowPreview)
+            {
+                this.previewDelayProcessor.PerformTask(this.UpdatePreviewFrame, 250);
+            }
         }
 
         public void SetContainer(OutputFormat container)