The signal strength stays at 200.
A lot of issues regarding the signal strength have to do with grounding. If you’re using a laptop, a suggested solution that has worked for me is to unplug the laptop and just run it off of battery. Also, I’ve found that the USB cable can sometimes cause grounding issues as well. You can try switching to a different USB cable or just mess around with the cable like an antenna until you see the signal strength change.