performance tuning

src/features/mark/Mark.vue

@@ -143,6 +143,10 @@ export default defineComponent({
         }
 
         // prefetch sliceUrls image
+        if (store.tasks.length > 1) {
+          // 如果不是当前任务，则先等3秒再去取任务，以免和其他请求争夺网络资源
+          await new Promise((resolve) => setTimeout(resolve, 3000));
+        }
         for (const sliceUrl of (res.data as Task).sliceUrls) {
           fetch(sliceUrl);
         }