From 59e955a559579836cc293fdba744965891c00fd9 Mon Sep 17 00:00:00 2001
From: psykana <36602558+psykana@users.noreply.github.com>
Date: Tue, 17 Dec 2024 22:16:05 +0200
Subject: [PATCH] Fix horrible lag in Zombies mode (#33818)

---
 Content.Shared/Whitelist/EntityWhitelistSystem.cs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/Content.Shared/Whitelist/EntityWhitelistSystem.cs b/Content.Shared/Whitelist/EntityWhitelistSystem.cs
index 7c78b410a1..9a6e87c1b4 100644
--- 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)
-- 
2.51.2