diff --git a/app.yaml b/app.yaml
index 4905c15..772ceba 100644
--- a/app.yaml
+++ b/app.yaml
@@ -1,6 +1,6 @@
 id: t11
 name: t11
-version: 2.16.2
+version: 2.16.3
 author: t11
 icon: ''
 desc: t11
diff --git a/main.py b/main.py
index 7c158fd..82f6223 100644
--- a/main.py
+++ b/main.py
@@ -278,8 +278,6 @@ def cmd_str():
         logger.info("系统准备完成...")
 
     last_adc_trigger = 0
-    _latest_frame = None  # 预读的最新帧缓存，供射箭触发时减少延迟
-    _frame_read_counter = 0  # 相机预读计数器，避免每帧都读拖慢CPU
     # 气压采样：减少日志频率（每 N 个点输出一条），避免 logger.debug 拖慢采样
     PRESSURE_BATCH_SIZE = 100
 
@@ -391,8 +389,7 @@ def cmd_str():
                 _flush_pressure_buf("before_trigger")
 
                 try:
-                    process_shot(adc_val, pre_frame=_latest_frame)
-                    _latest_frame = None
+                    process_shot(adc_val)
                 except Exception as e:
                     logger = logger_manager.logger
                     if logger:
@@ -402,18 +399,11 @@ def cmd_str():
                     time.sleep_ms(100)
                     continue
             else:
-                # 每3次循环预读一次相机帧（~15ms间隔），平衡buffer新鲜度与CPU占用
-                _frame_read_counter += 1
-                if _frame_read_counter >= 3:
-                    _frame_read_counter = 0
+                if config.SHOW_CAMERA_PHOTO_WHILE_SHOOTING:
                     try:
-                        _latest_frame = camera_manager.read_frame()
-                        if config.SHOW_CAMERA_PHOTO_WHILE_SHOOTING and _latest_frame is not None:
-                            camera_manager.show(_latest_frame)
+                        camera_manager.show(camera_manager.read_frame())
                     except Exception as e:
-                        logger = logger_manager.logger
-                        if logger:
-                            logger.error(f"[MAIN] 预读/显示异常: {e}")
+                        pass
                 time.sleep_ms(5)
 
         except Exception as e:
diff --git a/shoot_manager.py b/shoot_manager.py
index 95e5dd2..d94a214 100644
--- a/shoot_manager.py
+++ b/shoot_manager.py
@@ -311,21 +311,16 @@ def analyze_shot(frame, laser_point=None):
     return _build_circle_result(cdata, roi_xyxy)
 
 
-def process_shot(adc_val, pre_frame=None):
+def process_shot(adc_val):
     """
     处理射箭事件（逻辑控制部分）
     :param adc_val: ADC触发值
-    :param pre_frame: 主循环预读的最新帧（可选），传入则跳过拍照以减少延迟
     :return: None
     """
     logger = logger_manager.logger
 
     try:
-        # 优先使用预读帧（零延迟），否则实时拍照
-        if pre_frame is not None:
-            frame = pre_frame
-        else:
-            frame = camera_manager.read_frame()
+        frame = camera_manager.read_frame()
 
         # 网络事件移到拍照之后，避免阻塞拍照
         network_manager.safe_enqueue({"shoot_event": "start"}, msg_type=2, high=True)
diff --git a/version.py b/version.py
index 0caacf8..c1c3049 100644
--- a/version.py
+++ b/version.py
@@ -4,6 +4,6 @@
 应用版本号
 每次 OTA 更新时，只需要更新这个文件中的版本号
 """
-VERSION = '2.16.2'
+VERSION = '2.16.3'