CanMV IDE operate normal for few seconds and stop for few seconds, and repeate this.

Try to unplug the CanMV development board and see if it still behaves this way. If it does, it might be due to unstable USB connection.

Please provide the debug serial port output log.

I loaded person_detection.py file from examples and run the file.
As you can see in Serial terminal window,"total took xx.00 ms " is updating when running. But after few seconds, it stop for few secons and don't update message. It repeat run and stop.
I loaded circle_drawing.py and run. for few seconds draw a circle but after few seconds stop drawing circle.
I think CanMV IDE software is not working normally.