diff --git a/app/react/components/ui.jsx b/app/react/components/ui.jsx
index c503989..b471773 100644
--- a/app/react/components/ui.jsx
+++ b/app/react/components/ui.jsx
@@ -64,7 +64,10 @@ function Ui({disconnected}) {
   const [externalInventorySlots, setExternalInventorySlots] = useState();
   const [particleWorker, setParticleWorker] = useState();
   const refreshEcs = useCallback(() => {
-    setEcs(new ClientEcs({Components, Systems}));
+    class ClientEcsPerf extends ClientEcs {
+      markChange() {}
+    }
+    setEcs(new ClientEcsPerf({Components, Systems}));
   }, [Components, Systems, setEcs]);
   useEffect(() => {
     async function setEcsStuff() {