Use 1 Core NPU

env.example

@@ -27,7 +27,7 @@ IMGSZ=320
 # Use FP16 inference on NPU (true/false); currently unused in ByteTrack variant
 HALF=false
 # NPU core mask: 1=core0, 2=core1, 3=core0+core1, 7=all three
-CORE_MASK=7
+CORE_MASK=1
 # Compute device index (reserved; not used at runtime)
 DEVICE=0