diff --git a/_worker.js b/_worker.js
index b72e1f2..9428c4c 100644
--- a/_worker.js
+++ b/_worker.js
@@ -375,7 +375,7 @@ function handleConnection(ws, request, FIXED_UUID) {
     let isConnecting = false, isReading = false;
     let score = 1.0, lastCheck = Date.now(), lastRxBytes = 0, successCount = 0, failCount = 0;
     let stats = { total: 0, count: 0, bigChunks: 0, window: 0, timestamp: Date.now() };
-    let mode = 'direct', avgSize = 0, throughputs = [];
+    let mode = 'adaptive', avgSize = 0, throughputs = [];
 
     // 动态调整传输模式
     const updateMode = size => {