This sounds like a performance problem. Try to enable VT (click the red ! on the top of nox) and enable more resources to nox in the settings. A guide will pop up and tell you to go to your BIOS and enable VT (virtualization technology). Please let me know if that helped.
Edit: You can also disable the statistics check in the bots settings. Try to do that and tell me if it runs fine. If it doesn’t, it could also be a resolution problem.