Add cvar to disable round end pvs overrides (#29151)

Content.Server/GameTicking/GameTicker.RoundFlow.cs

@@ -358,6 +358,7 @@ public void ShowRoundEndScoreboard(string text = "")
             var listOfPlayerInfo = new List<RoundEndMessageEvent.RoundEndPlayerInfo>();
             // Grab the great big book of all the Minds, we'll need them for this.
             var allMinds = EntityQueryEnumerator<MindComponent>();
+            var pvsOverride = _configurationManager.GetCVar(CCVars.RoundEndPVSOverrides);
             while (allMinds.MoveNext(out var mindId, out var mind))
             {
                 // TODO don't list redundant observer roles?
@@ -388,7 +389,7 @@ public void ShowRoundEndScoreboard(string text = "")
                 else if (mind.CurrentEntity != null && TryName(mind.CurrentEntity.Value, out var icName))
                     playerIcName = icName;
 
-                if (TryGetEntity(mind.OriginalOwnedEntity, out var entity))
+                if (TryGetEntity(mind.OriginalOwnedEntity, out var entity) && pvsOverride)
                 {
                     _pvsOverride.AddGlobalOverride(GetNetEntity(entity.Value), recursive: true);
                 }

Content.Shared/CCVar/CCVars.cs

@@ -432,6 +432,14 @@ public static readonly CVarDef<bool>
         public static readonly CVarDef<string> RoundEndSoundCollection =
             CVarDef.Create("game.round_end_sound_collection", "RoundEnd", CVar.SERVERONLY);
 
+        /// <summary>
+        /// Whether or not to add every player as a global override to PVS at round end.
+        /// This will allow all players to see their clothing in the round screen player list screen,
+        /// but may cause lag during round end with very high player counts.
+        /// </summary>
+        public static readonly CVarDef<bool> RoundEndPVSOverrides =
+            CVarDef.Create("game.round_end_pvs_overrides", true, CVar.SERVERONLY);
+
         /*
          * Discord
          */