diff --git a/frontend/src/utils/__tests__/usageLoadQueue.spec.ts b/frontend/src/utils/__tests__/usageLoadQueue.spec.ts
index 24cebec836..c94070f443 100644
--- a/frontend/src/utils/__tests__/usageLoadQueue.spec.ts
+++ b/frontend/src/utils/__tests__/usageLoadQueue.spec.ts
@@ -20,11 +20,11 @@ describe('usageLoadQueue', () => {
     await Promise.all([p1, p2, p3])
 
     expect(timestamps).toHaveLength(3)
-    // 随机 1-1.5s 间隔，至少 950ms（留一点误差）
+    // 随机 1-2s 间隔，至少 950ms（留一点误差）
     expect(timestamps[1] - timestamps[0]).toBeGreaterThanOrEqual(950)
-    expect(timestamps[1] - timestamps[0]).toBeLessThan(1600)
+    expect(timestamps[1] - timestamps[0]).toBeLessThan(2100)
     expect(timestamps[2] - timestamps[1]).toBeGreaterThanOrEqual(950)
-    expect(timestamps[2] - timestamps[1]).toBeLessThan(1600)
+    expect(timestamps[2] - timestamps[1]).toBeLessThan(2100)
   })
 
   it('不同组请求并行执行', async () => {
diff --git a/frontend/src/utils/usageLoadQueue.ts b/frontend/src/utils/usageLoadQueue.ts
index 97549b15de..c329c97648 100644
--- a/frontend/src/utils/usageLoadQueue.ts
+++ b/frontend/src/utils/usageLoadQueue.ts
@@ -9,7 +9,7 @@
  */
 
 const GROUP_DELAY_MIN_MS = 1000
-const GROUP_DELAY_MAX_MS = 1500
+const GROUP_DELAY_MAX_MS = 2000
 
 type Task<T> = {
   fn: () => Promise<T>
@@ -37,7 +37,7 @@ async function drain(groupKey: string) {
     } catch (err) {
       task.reject(err)
     }
-    // Wait a random 1–1.5s before next request in the same group
+    // Wait a random 1–2s before next request in the same group
     if (queue.length > 0) {
       const jitter = GROUP_DELAY_MIN_MS + Math.random() * (GROUP_DELAY_MAX_MS - GROUP_DELAY_MIN_MS)
       await new Promise((r) => setTimeout(r, jitter))