diff --git a/app/react/components/pixi/entities.jsx b/app/react/components/pixi/entities.jsx
index 47bb806..b0a16f7 100644
--- a/app/react/components/pixi/entities.jsx
+++ b/app/react/components/pixi/entities.jsx
@@ -15,6 +15,7 @@ export default function Entities({monopolizers, particleWorker}) {
   const [debug] = useDebug();
   const [ecs] = useEcs();
   const containerRef = useRef();
+  const latestTick = useRef();
   const entities = useRef({});
   const pool = useRef([]);
   const [mainEntity] = useMainEntity();
@@ -75,8 +76,10 @@ export default function Entities({monopolizers, particleWorker}) {
       return;
     }
     async function onMessage(diff) {
-      await ecs.apply(diff.data);
-      updateEntities(diff.data);
+      latestTick.current = Promise.resolve(latestTick.current).then(async () => {
+        await ecs.apply(diff.data);
+        updateEntities(diff.data);
+      });
     }
     particleWorker.addEventListener('message', onMessage);
     return () => {
diff --git a/app/react/components/ui.jsx b/app/react/components/ui.jsx
index 8a42641..1356556 100644
--- a/app/react/components/ui.jsx
+++ b/app/react/components/ui.jsx
@@ -35,6 +35,7 @@ function Ui({disconnected}) {
   // Key input.
   const client = useClient();
   const chatInputRef = useRef();
+  const latestTick = useRef();
   const gameRef = useRef();
   const [mainEntity, setMainEntity] = useMainEntity();
   const [debug, setDebug] = useDebug();
@@ -320,8 +321,10 @@ function Ui({disconnected}) {
     if (0 === Object.keys(payload.ecs).length) {
       return;
     }
-    await ecs.apply(payload.ecs);
-    client.emitter.invoke(':Ecs', payload.ecs);
+    latestTick.current = Promise.resolve(latestTick.current).then(async () => {
+      await ecs.apply(payload.ecs);
+      client.emitter.invoke(':Ecs', payload.ecs);
+    });
   }, [ecs]);
   usePacket('Tick', onTickPacket);
   const onEcsTick = useCallback((payload, ecs) => {