diff --git a/sist2-vue/src/components/Lightbox.vue b/sist2-vue/src/components/Lightbox.vue
index 2e06121..f3a187b 100644
--- a/sist2-vue/src/components/Lightbox.vue
+++ b/sist2-vue/src/components/Lightbox.vue
@@ -78,16 +78,6 @@ export default {
       }
     };
 
-    document.onpointerdown = (e) => {
-      if (e.button === 2) {
-
-        const isLightboxOpen = this.$refs.lightbox === undefined || this.$refs.lightbox.$el.tagName === undefined;
-        if (isLightboxOpen) {
-          e.preventDefault();
-          return false;
-        }
-      }
-    }
   },
   methods: {
     keyDownListener(e) {
diff --git a/sist2-vue/src/ml/CLIPTransformerModel.js b/sist2-vue/src/ml/CLIPTransformerModel.js
index 35c06c5..d678954 100644
--- a/sist2-vue/src/ml/CLIPTransformerModel.js
+++ b/sist2-vue/src/ml/CLIPTransformerModel.js
@@ -22,7 +22,9 @@ export class CLIPTransformerModel {
 
     async loadModel(onProgress) {
         ort.env.wasm.wasmPaths = ORT_WASM_PATHS;
-        ort.env.wasm.numThreads = 2;
+        if (window.crossOriginIsolated) {
+            ort.env.wasm.numThreads = 2;
+        }
 
         let buf = await ModelStore.get(this._modelUrl);
         if (!buf) {