Jitter Amoothing

public/js/exhibit.js

@@ -270,7 +270,7 @@ async function start() {
     return;
   }
   detector = new TunedDetector({ dictionaryName: 'ARUCO_4X4_1000' }).setPreset('forgiving');
-  tracker = new MarkerTracker({ coastMs: 300, smooth: true });
+  tracker = new MarkerTracker({ coastMs: 120, smooth: true }); // short coast: don't linger on stale pose while panning
 
   await new Promise((res) => { if (video.readyState >= 2) res(); else video.onloadeddata = () => res(); });
   sizeAll();
@@ -327,7 +327,7 @@ function loop(now) {
   // 3) animate ghosts: smooth toward server target, apply yaw + idle wobble
   const t = now / 1000;
   for (const obj of ghostObjs.values()) {
-    obj.group.position.lerp(obj.targetPos, 0.25); // smooth network updates
+    obj.group.position.lerp(obj.targetPos, 0.5); // smooth network updates (snappier follow)
     if (obj._yaw != null) {
       // face travel/authored yaw, eased
       const cur = obj.group.rotation.y;