diff --git a/LightlessSync/UI/DownloadUi.cs b/LightlessSync/UI/DownloadUi.cs
index 301f177..93cc623 100644
--- a/LightlessSync/UI/DownloadUi.cs
+++ b/LightlessSync/UI/DownloadUi.cs
@@ -24,6 +24,7 @@ public class DownloadUi : WindowMediatorSubscriberBase
     private readonly ConcurrentDictionary<GameObjectHandler, bool> _uploadingPlayers = new();
     private readonly NotificationService _notificationService;
     private bool _notificationDismissed = true;
+    private int _lastDownloadStateHash = 0;
 
     public DownloadUi(ILogger<DownloadUi> logger, DalamudUtilService dalamudUtilService, LightlessConfigService configService,
         PairProcessingLimiter pairProcessingLimiter, FileUploadManager fileTransferManager, LightlessMediator mediator, UiSharedService uiShared, 
@@ -128,16 +129,17 @@ public class DownloadUi : WindowMediatorSubscriberBase
                 
                 if (useNotifications)
                 {
-                    // Use notification system
+                    // Use notification system - only update when data actually changes
                     if (_currentDownloads.Any())
                     {
-                        UpdateDownloadNotification(limiterSnapshot);
+                        UpdateDownloadNotificationIfChanged(limiterSnapshot);
                         _notificationDismissed = false;
                     }
                     else if (!_notificationDismissed)
                     {
                         _notificationService.DismissPairDownloadNotification();
                         _notificationDismissed = true;
+                        _lastDownloadStateHash = 0;
                     }
                 }
                 else
@@ -298,20 +300,34 @@ public class DownloadUi : WindowMediatorSubscriberBase
         };
     }
 
-    private void UpdateDownloadNotification(PairProcessingLimiterSnapshot limiterSnapshot)
+    private void UpdateDownloadNotificationIfChanged(PairProcessingLimiterSnapshot limiterSnapshot)
     {
-        var downloadStatus = new List<(string playerName, float progress, string status)>();
+        var downloadStatus = new List<(string playerName, float progress, string status)>(_currentDownloads.Count);
+        var hashCode = new HashCode();
 
-        foreach (var item in _currentDownloads.ToList())
+        foreach (var item in _currentDownloads)
         {
-            var dlSlot = item.Value.Count(c => c.Value.DownloadStatus == DownloadStatus.WaitingForSlot);
-            var dlQueue = item.Value.Count(c => c.Value.DownloadStatus == DownloadStatus.WaitingForQueue);
-            var dlProg = item.Value.Count(c => c.Value.DownloadStatus == DownloadStatus.Downloading);
-            var dlDecomp = item.Value.Count(c => c.Value.DownloadStatus == DownloadStatus.Decompressing);
-            var totalFiles = item.Value.Sum(c => c.Value.TotalFiles);
-            var transferredFiles = item.Value.Sum(c => c.Value.TransferredFiles);
-            var totalBytes = item.Value.Sum(c => c.Value.TotalBytes);
-            var transferredBytes = item.Value.Sum(c => c.Value.TransferredBytes);
+            var dlSlot = 0;
+            var dlQueue = 0;
+            var dlProg = 0;
+            var dlDecomp = 0;
+            long totalBytes = 0;
+            long transferredBytes = 0;
+
+            // Single pass through the dictionary to count everything - avoid multiple LINQ iterations
+            foreach (var entry in item.Value)
+            {
+                var fileStatus = entry.Value;
+                switch (fileStatus.DownloadStatus)
+                {
+                    case DownloadStatus.WaitingForSlot: dlSlot++; break;
+                    case DownloadStatus.WaitingForQueue: dlQueue++; break;
+                    case DownloadStatus.Downloading: dlProg++; break;
+                    case DownloadStatus.Decompressing: dlDecomp++; break;
+                }
+                totalBytes += fileStatus.TotalBytes;
+                transferredBytes += fileStatus.TransferredBytes;
+            }
 
             var progress = totalBytes > 0 ? (float)transferredBytes / totalBytes : 0f;
             
@@ -323,13 +339,27 @@ public class DownloadUi : WindowMediatorSubscriberBase
             else status = "completed";
 
             downloadStatus.Add((item.Key.Name, progress, status));
+            
+            // Build hash from meaningful state
+            hashCode.Add(item.Key.Name);
+            hashCode.Add(transferredBytes);
+            hashCode.Add(totalBytes);
+            hashCode.Add(status);
         }
 
-        // Pass queue waiting count separately, show notification if there are downloads or queue items
         var queueWaiting = limiterSnapshot.IsEnabled ? limiterSnapshot.Waiting : 0;
-        if (downloadStatus.Any() || queueWaiting > 0)
+        hashCode.Add(queueWaiting);
+        
+        var currentHash = hashCode.ToHashCode();
+        
+        // Only update notification if state has actually changed
+        if (currentHash != _lastDownloadStateHash)
         {
-            _notificationService.ShowPairDownloadNotification(downloadStatus, queueWaiting);
+            _lastDownloadStateHash = currentHash;
+            if (downloadStatus.Count > 0 || queueWaiting > 0)
+            {
+                _notificationService.ShowPairDownloadNotification(downloadStatus, queueWaiting);
+            }
         }
     }
 
diff --git a/LightlessSync/UI/LightlessNotificationUI.cs b/LightlessSync/UI/LightlessNotificationUI.cs
index 36fa508..7ced889 100644
--- a/LightlessSync/UI/LightlessNotificationUI.cs
+++ b/LightlessSync/UI/LightlessNotificationUI.cs
@@ -134,11 +134,7 @@ public class LightlessNotificationUI : WindowMediatorSubscriberBase
 
             var viewport = ImGui.GetMainViewport();
             
-            // Set window to full viewport height
-            var width = _configService.Current.NotificationWidth;
-            Size = new Vector2(width, viewport.WorkSize.Y);
-            SizeCondition = ImGuiCond.Always;
-            
+            // Window auto-resizes based on content (AlwaysAutoResize flag)
             Position = CalculateWindowPosition(viewport);
             PositionCondition = ImGuiCond.Always;