skip conv-bn fuse on validation

Author: lightb0x

val.py

@@ -137,7 +137,7 @@ def run(
         (save_dir / 'labels' if save_txt else save_dir).mkdir(parents=True, exist_ok=True)  # make dir
 
         # Load model
-        model = DetectMultiBackend(weights, device=device, dnn=dnn, data=data, fp16=half)
+        model = DetectMultiBackend(weights, device=device, dnn=dnn, data=data, fp16=half, fuse=False)
         stride, pt, jit, engine = model.stride, model.pt, model.jit, model.engine
         imgsz = check_img_size(imgsz, s=stride)  # check image size
         half = model.fp16  # FP16 supported on limited backends with CUDA