diff --git a/game.js b/game.js
index 83595f5..85edc36 100644
--- a/game.js
+++ b/game.js
@@ -372,8 +372,8 @@ export function tick(time, gl, params) {
 
     const campos = params.camera.position;
 
-    // expensive stuff, can take several cycles
-    try {
+    // world generation / geometry update
+    {
         // frame time is typically 16.7ms, so this may lag a bit
         let timeLeft = 10;
         const start = performance.now();
@@ -382,11 +382,6 @@ export function tick(time, gl, params) {
         timeLeft -= performance.now() - start;
         updateWorldGeometry(gl, params.world, campos[2], campos[0], timeLeft);
     }
-    catch (ex) {
-        if (ex !== 'timesup') {
-            throw ex;
-        }
-    }
 
     const objects = getObjects(params.world, campos[2], campos[0], params.worldGl);