diff --git a/src/components/AssetsManagement/AssetPreview.vue b/src/components/AssetsManagement/AssetPreview.vue
index ceaa6ff..b3ec8e0 100644
--- a/src/components/AssetsManagement/AssetPreview.vue
+++ b/src/components/AssetsManagement/AssetPreview.vue
@@ -75,26 +75,18 @@ export default{
                 engine.ambientLight.intensity = 25;
                 if (this.obj.type == 'panorama2d') {
                     await engine.loadPanorama(this.obj.asset.name);
-                    // let t = await engine.loadTexture(`/asset/default/${this.obj.asset.name}`);
-                    // t.mapping = engine.$.EquirectangularReflectionMapping;
-                    // engine.scene.background = t;
-                    // engine.scene.environment = t;
-                    // engine.scene.add(engine.camera);
                 } else {
                     let gltf = await engine.load(this.obj.asset.name);
-                    //console.debug('GLTF', gltf);
                     this.loadedAsset = gltf;
                     this.animations = gltf.animations.map(a => ({
                         name: a.name, id: a.uuid
                     }));
                     autoScale(gltf.scene);
                     let bb = new engine.$.Box3().setFromObject(gltf.scene);
-                    //console.log(bb)
                     engine.camera.position.set(bb.max.x, bb.max.y, bb.max.z*3);
                     engine.orbitControls.target.set((bb.max.x + bb.min.x) / 2, (bb.max.y + bb.min.y) / 2, (bb.max.z + bb.min.z) / 2)
                     engine.orbitControls.update();
                     engine.activeObjects.add(gltf.scene);
-                    //engine.scene.add(engine.light);
                 }
             }
         },
diff --git a/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js b/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js
index 792e093..4310f9d 100644
--- a/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js
+++ b/src/components/InteractiveObjects/MazeQuizGame/MazeQuizGame.js
@@ -43,8 +43,8 @@ class MazeQuizGame extends EventManager {
         super();
         this.data = data;
         data.noPhysics = true;
-        params.mazeFile = data.style || 'quiz-s2.gltf';
-        params.io = this;
+
+        this.params = { ...params, mazeFile: data.style || 'quiz-s2.gltf', io: this }
         
         this.maxPoints = (data.points || 0) + (data.questionPoints||0) * data.questions.length;
         this.minPoints = this.maxPoints - (data.questionPenalty||0) * data.questions.length;
@@ -52,7 +52,7 @@ class MazeQuizGame extends EventManager {
         return new Promise(async (resolve, reject)=>{
             let questions = data.shuffle ? Utils.shuffleArray(data.questions) : data.questions;
             let def = this.generate(questions);
-            this.mazeObject = new MazeObject(engine, def, params)
+            this.mazeObject = new MazeObject(engine, def, this.params)
             engine.addEventListener('collision', async e=>{
                 let ud1 = engine.physics.world.getCollider(e.handle1)?.parent()?.userData,
                     ud2 = engine.physics.world.getCollider(e.handle2)?.parent()?.userData;
@@ -124,7 +124,7 @@ class MazeQuizGame extends EventManager {
                 {
                     type: 'SceneSwitcher', switchScene: this.data.switchScene, switchType: this.data.switchType,
                     position:[0,.22,len + .52], scale: [0.33, 0.33, 0.33], 
-                    distance: params.wallSize*4
+                    distance: this.params.wallSize*4
                 }
             ]
         };
diff --git a/src/lib/GameEngine.js b/src/lib/GameEngine.js
index 9966f40..50fca27 100644
--- a/src/lib/GameEngine.js
+++ b/src/lib/GameEngine.js
@@ -68,12 +68,12 @@ class GameEngine extends EventManager{
         dirLight.castShadow = true;
         dirLight.shadow.mapSize.width = 1024;
         dirLight.shadow.mapSize.height = 1024;
-        const d = 10;
+        const d = 50;
         dirLight.shadow.camera.left = - d;
         dirLight.shadow.camera.right = d;
         dirLight.shadow.camera.top = d;
         dirLight.shadow.camera.bottom = - d;
-        dirLight.shadow.camera.far = 1000;
+        dirLight.shadow.camera.far = 100;
         dirLight.shadow.bias = - 0.001;
 
         // const spotLight = new THREE.SpotLight(0xffffff);
@@ -162,7 +162,7 @@ class GameEngine extends EventManager{
         renderer.toneMapping = THREE.CineonToneMapping;
         renderer.toneMappingExposure = 1.0;
         renderer.shadowMap.enabled = true;
-        renderer.shadowMap.type = THREE.PCFShadowMap; // default THREE.PCFShadowMap
+        renderer.shadowMap.type = THREE.VSMShadowMap; // default THREE.PCFShadowMap
         // renderer.toneMapping = THREE.ACESFilmicToneMapping;
         // renderer.toneMappingExposure = 1;
         // renderer.shadowMap.enabled = true;
@@ -674,18 +674,15 @@ class GameEngine extends EventManager{
         this.ambientSound.stop();
         this.loadedObjects.forEach(o=>clearObject(o.scene))
         GameEngine.loadedTextures.forEach(t=>{
-            //console.log('Disposing', t.name, this.renderer.info.memory.textures );
             t.dispose();
-            //console.log('Disposed', t.name, this.renderer.info.memory.textures );
         });
+        GameEngine.loadedTextures.splice(0, GameEngine.loadedTextures.length);
         this.scene.background?.dispose?.();
         this.scene.environment?.dispose?.(); 
         clearObject(this.scene);
         this.scene = null;
         this.tm?.setScene(null);
         this.removeAllListenersOfType('beforeRender');
-        this.renderer.renderLists.dispose();
-        this.renderer.properties.dispose();
     }
 
     async resetScene(){
@@ -703,6 +700,8 @@ class GameEngine extends EventManager{
         this.arBtn?.remove();
         this.xrBtn?.remove();
         this.stats?.dom?.remove();
+        this.renderer.renderLists.dispose();
+        this.renderer.properties.dispose();
         this.renderer.domElement.removeEventListener('wheel', this._wheelEvent)
         this.renderer.domElement.remove();
         super.dispose();
diff --git a/src/lib/MeshUtils.js b/src/lib/MeshUtils.js
index cb28620..c2136ef 100644
--- a/src/lib/MeshUtils.js
+++ b/src/lib/MeshUtils.js
@@ -93,12 +93,14 @@ function clearObject(o){
             disposables.push(object);
         }
         if (object.isLight){
-            object.shadow?.map?.dispose();
-            object.shadow?.dispose();
+            //console.log('Disposeing light', object)
             object.dispose();
+            object.shadow?.dispose();
+            object.shadow?.map?.dispose();
         }
         if (object.userData?._io){
             object.userData._io.dispose?.();
+            delete object.userData._io;
         }
     });
     disposables.forEach(object=>{
@@ -110,6 +112,7 @@ function clearObject(o){
             for (const material of object.material) clearMaterial(material)
         }
     })
+    o.clear();
 }
 
 function clearMaterial(material) {