diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index 5f2a314f9f..1517029050 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -389,6 +389,8 @@ namespace Emby.Server.Implementations.Data
                         });
                     }
                 }
+
+                GC.Collect();
             }
             catch (Exception ex)
             {
diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index 1ff61286f9..5bf53fcb43 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -855,7 +855,7 @@ namespace Emby.Server.Implementations.Library
                 SortOrder = SortOrder.Descending,
                 Limit = 1
             };
-            
+
             return GetItemList(query)
                 .FirstOrDefault();
         }
@@ -1113,16 +1113,21 @@ namespace Emby.Server.Implementations.Library
 
             progress.Report(1);
 
-            var userRoot = GetUserRootFolder();
+            await GetUserRootFolder().RefreshMetadata(cancellationToken).ConfigureAwait(false);
 
-            await userRoot.RefreshMetadata(cancellationToken).ConfigureAwait(false);
-
-            await userRoot.ValidateChildren(new Progress<double>(), cancellationToken, new MetadataRefreshOptions(_fileSystem), recursive: false).ConfigureAwait(false);
+            await GetUserRootFolder().ValidateChildren(new Progress<double>(), cancellationToken, new MetadataRefreshOptions(_fileSystem), recursive: false).ConfigureAwait(false);
             progress.Report(2);
 
+            // Quickly scan CollectionFolders for changes
+            foreach (var folder in GetUserRootFolder().Children.OfType<Folder>().ToList())
+            {
+                await folder.RefreshMetadata(cancellationToken).ConfigureAwait(false);
+            }
+            progress.Report(3);
+
             var innerProgress = new ActionableProgress<double>();
 
-            innerProgress.RegisterAction(pct => progress.Report(2 + pct * .73));
+            innerProgress.RegisterAction(pct => progress.Report(3 + pct * .72));
 
             // Now validate the entire media library
             await RootFolder.ValidateChildren(innerProgress, cancellationToken, new MetadataRefreshOptions(_fileSystem), recursive: true).ConfigureAwait(false);
@@ -1291,7 +1296,6 @@ namespace Emby.Server.Implementations.Library
                 if (parent != null)
                 {
                     SetTopParentIdsOrAncestors(query, new List<BaseItem> { parent });
-                    query.ParentId = null;
                 }
             }
 
@@ -1311,7 +1315,6 @@ namespace Emby.Server.Implementations.Library
                 if (parent != null)
                 {
                     SetTopParentIdsOrAncestors(query, new List<BaseItem> { parent });
-                    query.ParentId = null;
                 }
             }
 
@@ -1456,6 +1459,12 @@ namespace Emby.Server.Implementations.Library
                 // Optimize by querying against top level views
                 query.TopParentIds = parents.SelectMany(i => GetTopParentIdsForQuery(i, query.User)).Select(i => i.ToString("N")).ToArray();
                 query.AncestorIds = new string[] { };
+
+                // Prevent searching in all libraries due to empty filter
+                if (query.TopParentIds.Length == 0)
+                {
+                    query.TopParentIds = new[] { Guid.NewGuid().ToString("N") };
+                }
             }
         }
 
@@ -1478,7 +1487,6 @@ namespace Emby.Server.Implementations.Library
                 if (parent != null)
                 {
                     SetTopParentIdsOrAncestors(query, new List<BaseItem> { parent });
-                    query.ParentId = null;
                 }
             }
 
@@ -1514,12 +1522,26 @@ namespace Emby.Server.Implementations.Library
             {
                 // Optimize by querying against top level views
                 query.TopParentIds = parents.SelectMany(i => GetTopParentIdsForQuery(i, query.User)).Select(i => i.ToString("N")).ToArray();
+
+                // Prevent searching in all libraries due to empty filter
+                if (query.TopParentIds.Length == 0)
+                {
+                    query.TopParentIds = new[] { Guid.NewGuid().ToString("N") };
+                }
             }
             else
             {
                 // We need to be able to query from any arbitrary ancestor up the tree
                 query.AncestorIds = parents.SelectMany(i => i.GetIdsForAncestorQuery()).Select(i => i.ToString("N")).ToArray();
+
+                // Prevent searching in all libraries due to empty filter
+                if (query.AncestorIds.Length == 0)
+                {
+                    query.AncestorIds = new[] { Guid.NewGuid().ToString("N") };
+                }
             }
+
+            query.ParentId = null;
         }
 
         private void AddUserToQuery(InternalItemsQuery query, User user)
@@ -1561,7 +1583,7 @@ namespace Emby.Server.Implementations.Library
 
                     }, CancellationToken.None).Result;
 
-                    return channelResult.Items.Select(i =>  i.Id);
+                    return channelResult.Items.Select(i => i.Id);
                 }
 
                 // Translate view into folders
@@ -1602,7 +1624,7 @@ namespace Emby.Server.Implementations.Library
             {
                 return collectionFolder.PhysicalFolderIds;
             }
-            
+
             var topParent = item.GetTopParent();
             if (topParent != null)
             {
diff --git a/Emby.Server.Implementations/TV/TVSeriesManager.cs b/Emby.Server.Implementations/TV/TVSeriesManager.cs
index 5e6de1d4db..6bf4125253 100644
--- a/Emby.Server.Implementations/TV/TVSeriesManager.cs
+++ b/Emby.Server.Implementations/TV/TVSeriesManager.cs
@@ -144,23 +144,16 @@ namespace Emby.Server.Implementations.TV
             // If viewing all next up for all series, remove first episodes
             // But if that returns empty, keep those first episodes (avoid completely empty view)
             var alwaysEnableFirstEpisode = !string.IsNullOrWhiteSpace(request.SeriesId);
-            var isFirstItemAFirstEpisode = true;
 
             return allNextUp
                 .Where(i =>
                 {
                     if (alwaysEnableFirstEpisode || i.Item1 != DateTime.MinValue)
                     {
-                        isFirstItemAFirstEpisode = false;
                         return true;
                     }
 
-                    if (isFirstItemAFirstEpisode)
-                    {
-                        return false;
-                    }
-
-                    return true;
+                    return false;
                 })
                 .Select(i => i.Item2())
                 .Where(i => i != null)
diff --git a/MediaBrowser.Api/BaseApiService.cs b/MediaBrowser.Api/BaseApiService.cs
index 07ec6d955a..1ee499ed56 100644
--- a/MediaBrowser.Api/BaseApiService.cs
+++ b/MediaBrowser.Api/BaseApiService.cs
@@ -150,7 +150,7 @@ namespace MediaBrowser.Api
                 options.Fields.Add(Model.Querying.ItemFields.ChildCount);
             }
 
-            if (client.IndexOf("web", StringComparison.OrdinalIgnoreCase) == -1 &&
+            else if (client.IndexOf("web", StringComparison.OrdinalIgnoreCase) == -1 &&
 
                 // covers both emby mobile and emby for android mobile
                 client.IndexOf("mobile", StringComparison.OrdinalIgnoreCase) == -1 &&
diff --git a/MediaBrowser.Controller/Entities/CollectionFolder.cs b/MediaBrowser.Controller/Entities/CollectionFolder.cs
index c505aefb3f..681f16f07c 100644
--- a/MediaBrowser.Controller/Entities/CollectionFolder.cs
+++ b/MediaBrowser.Controller/Entities/CollectionFolder.cs
@@ -201,6 +201,11 @@ namespace MediaBrowser.Controller.Entities
         }
 
         protected override bool RefreshLinkedChildren(IEnumerable<FileSystemMetadata> fileSystemChildren)
+        {
+            return RefreshLinkedChildrenInternal(true);
+        }
+
+        private bool RefreshLinkedChildrenInternal(bool setFolders)
         {
             var physicalFolders = GetPhysicalFolders(false)
                 .ToList();
@@ -219,7 +224,10 @@ namespace MediaBrowser.Controller.Entities
             if (!folderIds.SequenceEqual(newFolderIds))
             {
                 changed = true;
-                PhysicalFolderIds = newFolderIds.ToList();
+                if (setFolders)
+                {
+                    PhysicalFolderIds = newFolderIds.ToList();
+                }
             }
 
             return changed;