diff --git a/MediaBrowser.Model/Configuration/UserConfiguration.cs b/MediaBrowser.Model/Configuration/UserConfiguration.cs
index b081e2973..313c5243c 100644
--- a/MediaBrowser.Model/Configuration/UserConfiguration.cs
+++ b/MediaBrowser.Model/Configuration/UserConfiguration.cs
@@ -27,8 +27,6 @@ namespace MediaBrowser.Model.Configuration
         public bool DisplayMissingEpisodes { get; set; }
         public bool DisplayUnairedEpisodes { get; set; }
 
-        public bool GroupMoviesIntoBoxSets { get; set; }
-
         public string[] ExcludeFoldersFromGrouping { get; set; }
         public string[] GroupedFolders { get; set; }
 
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index f1b3e7bab..d042125b9 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -602,19 +602,16 @@ namespace MediaBrowser.Model.Dlna
 
         private int GetAudioBitrate(string subProtocol, int? maxTotalBitrate, int? targetAudioChannels, string targetAudioCodec, MediaStream audioStream)
         {
-            var defaultBitrate = 128000;
-            if (StringHelper.EqualsIgnoreCase(targetAudioCodec, "ac3"))
+            var defaultBitrate = audioStream.BitRate ?? 192000;
+            // Reduce the bitrate if we're downmixing
+            if (targetAudioChannels.HasValue && audioStream != null && audioStream.Channels.HasValue && targetAudioChannels.Value < audioStream.Channels.Value)
             {
-                defaultBitrate = 192000;
-            }
-            if (!string.IsNullOrEmpty(targetAudioCodec) && audioStream != null && StringHelper.EqualsIgnoreCase(audioStream.Codec, targetAudioCodec))
-            {
-                defaultBitrate = audioStream.BitRate ?? defaultBitrate;
+                defaultBitrate = StringHelper.EqualsIgnoreCase(targetAudioCodec, "ac3") ? 192000 : 128000;
             }
 
             if (targetAudioChannels.HasValue)
             {
-                if (targetAudioChannels.Value >= 5 && (maxTotalBitrate ?? 0) >= 1500000)
+                if (targetAudioChannels.Value >= 5 && (maxTotalBitrate ?? 0) >= 1200000)
                 {
                     if (StringHelper.EqualsIgnoreCase(targetAudioCodec, "ac3"))
                     {
diff --git a/MediaBrowser.Server.Startup.Common/ApplicationHost.cs b/MediaBrowser.Server.Startup.Common/ApplicationHost.cs
index 75f2d2427..9c5015b0e 100644
--- a/MediaBrowser.Server.Startup.Common/ApplicationHost.cs
+++ b/MediaBrowser.Server.Startup.Common/ApplicationHost.cs
@@ -386,7 +386,6 @@ namespace MediaBrowser.Server.Startup.Common
                 new MovieDbEpisodeProviderMigration(ServerConfigurationManager),
                 new DbMigration(ServerConfigurationManager, TaskManager),
                 new UpdateLevelMigration(ServerConfigurationManager, this, HttpClient, JsonSerializer, _releaseAssetFilename),
-                new CollectionGroupingMigration(ServerConfigurationManager, UserManager),
                 new CollectionsViewMigration(ServerConfigurationManager, UserManager)
             };
 
diff --git a/MediaBrowser.Server.Startup.Common/MediaBrowser.Server.Startup.Common.csproj b/MediaBrowser.Server.Startup.Common/MediaBrowser.Server.Startup.Common.csproj
index bbef5caea..5ee7d49e8 100644
--- a/MediaBrowser.Server.Startup.Common/MediaBrowser.Server.Startup.Common.csproj
+++ b/MediaBrowser.Server.Startup.Common/MediaBrowser.Server.Startup.Common.csproj
@@ -70,7 +70,6 @@
     <Compile Include="FFMpeg\FFMpegInfo.cs" />
     <Compile Include="INativeApp.cs" />
     <Compile Include="MbLinkShortcutHandler.cs" />
-    <Compile Include="Migrations\CollectionGroupingMigration.cs" />
     <Compile Include="Migrations\CollectionsViewMigration.cs" />
     <Compile Include="Migrations\IVersionMigration.cs" />
     <Compile Include="Migrations\DbMigration.cs" />
diff --git a/MediaBrowser.Server.Startup.Common/Migrations/CollectionGroupingMigration.cs b/MediaBrowser.Server.Startup.Common/Migrations/CollectionGroupingMigration.cs
deleted file mode 100644
index 5041c49b8..000000000
--- a/MediaBrowser.Server.Startup.Common/Migrations/CollectionGroupingMigration.cs
+++ /dev/null
@@ -1,40 +0,0 @@
-using System.Linq;
-using MediaBrowser.Controller.Configuration;
-using MediaBrowser.Controller.Library;
-
-namespace MediaBrowser.Server.Startup.Common.Migrations
-{
-    public class CollectionGroupingMigration : IVersionMigration
-    {
-        private readonly IServerConfigurationManager _config;
-        private readonly IUserManager _userManager;
-
-        public CollectionGroupingMigration(IServerConfigurationManager config, IUserManager userManager)
-        {
-            _config = config;
-            _userManager = userManager;
-        }
-
-        public void Run()
-        {
-            var migrationKey = this.GetType().Name;
-            var migrationKeyList = _config.Configuration.Migrations.ToList();
-
-            if (!migrationKeyList.Contains(migrationKey))
-            {
-                if (_config.Configuration.IsStartupWizardCompleted)
-                {
-                    if (_userManager.Users.Any(i => i.Configuration.GroupMoviesIntoBoxSets))
-                    {
-                        _config.Configuration.EnableGroupingIntoCollections = true;
-                    }
-                }
-
-                migrationKeyList.Add(migrationKey);
-                _config.Configuration.Migrations = migrationKeyList.ToArray();
-                _config.SaveConfiguration();
-            }
-
-        }
-    }
-}