diff --git a/ios/Classes/VideoDecoder.swift b/ios/Classes/VideoDecoder.swift
index 0835b5c..657eaa7 100644
--- a/ios/Classes/VideoDecoder.swift
+++ b/ios/Classes/VideoDecoder.swift
@@ -67,7 +67,8 @@ class VideoDecoder {
     /// 上次渲染时间
     private var lastRenderTimeMs: Int64 = 0
     /// 渲染启动标志（低水位控制）
-    private var renderStarted = false
+    /// 固定低水位阈值
+    private let renderLowWaterMark = 15
     
     // ====== 新增：帧重排序与丢帧相关成员 ======
     /// 帧重排序缓冲区
@@ -147,10 +148,10 @@ class VideoDecoder {
         let firstRel = firstFrameRelativeTimestamp ?? 0
         let absTimestamp = base + (timestamp - firstRel)
         
-        if absTimestamp < now - maxAllowedDelayMs {
-            print("[VideoDecoder][警告] 丢弃延迟帧: type=\(frameType), seq=\(frameSeq), delay=\(now - absTimestamp)ms")
-            return false
-        }
+//        if absTimestamp < now - maxAllowedDelayMs {
+//            print("[VideoDecoder][警告] 丢弃延迟帧: type=\(frameType), seq=\(frameSeq), delay=\(now - absTimestamp)ms")
+//            return false
+//        }
         
         // 2. 帧重排序处理
         if frameType == 0 { // I帧
@@ -225,17 +226,12 @@ class VideoDecoder {
                 return
             }
             
-            // 低水位启动渲染逻辑
-            if !self.renderStarted {
-                var outputCount = 0
-                self.outputQueue.sync { outputCount = self.outputBuffer.count }
-                if outputCount >= Int(Double(self.outputBufferMaxCount) * 0.15) {
-                    self.renderStarted = true
-                    print("[VideoDecoder] 渲染启动，outputBuffer已达低水位: \(outputCount)")
-                } else {
-                    // 未达到低水位前不渲染
-                    return
-                }
+            // 每次渲染都判断是否达到低水位
+            var outputCount = 0
+            self.outputQueue.sync { outputCount = self.outputBuffer.count }
+            if outputCount < self.renderLowWaterMark {
+                // 未达到低水位前不渲染
+                return
             }
             
             if let (pixelBuffer, timestamp) = self.dequeueOutput() {
@@ -245,10 +241,10 @@ class VideoDecoder {
                 let firstRel = firstFrameRelativeTimestamp ?? 0
                 let absTimestamp = base + (timestamp - firstRel)
                 
-                if absTimestamp < now - self.maxAllowedDelayMs {
-                    print("[VideoDecoder][警告] 丢弃延迟渲染帧: delay=\(now - absTimestamp)ms")
-                    return
-                }
+//                if absTimestamp < now - self.maxAllowedDelayMs {
+//                    print("[VideoDecoder][警告] 丢弃延迟渲染帧: delay=\(now - absTimestamp)ms")
+//                    return
+//                }
                 
                 DispatchQueue.main.async {
                     self.onFrameDecoded?(pixelBuffer, timestamp)