Reduce preload timeout

extra/shell.html

@@ -280,15 +280,15 @@
                     return response.json();
                 })
                 .then(function(jsonResponse) {
+                    setTimeout(() => {
                         jsonResponse.forEach((f) => {
                             const url = mapping[f.toLowerCase().replace(new RegExp("\\.[^/.]+$"), "")];
                             if (!url) return;
 
                             // Preload the asset
-                        setTimeout(() => {
                                 fetch('gameasync/' + url).then().catch();
-                        }, 1000);
                         });
+                    }, 200);
                 });
         };