Fix horrible lag in Zombies mode (#33818)

diff --git a/Content.Shared/Whitelist/EntityWhitelistSystem.cs b/Content.Shared/Whitelist/EntityWhitelistSystem.cs
index 7c78b410a18b416203daf30083b939d7ca6b5d93..9a6e87c1b4ad66399e3080a742c1178b9f16f0dc 100644 (file)
--- a/Content.Shared/Whitelist/EntityWhitelistSystem.cs
+++ b/Content.Shared/Whitelist/EntityWhitelistSystem.cs
@@ -49,10 +49,12 @@ public sealed class EntityWhitelistSystem : EntitySystem
     {
         if (list.Components != null)
         {
-            var regs = StringsToRegs(list.Components);
-
-            list.Registrations ??= new List<ComponentRegistration>();
-            list.Registrations.AddRange(regs);
+            if (list.Registrations == null)
+            {
+                var regs = StringsToRegs(list.Components);
+                list.Registrations = new List<ComponentRegistration>();
+                list.Registrations.AddRange(regs);
+            }
         }
 
         if (list.MindRoles != null)