Hello, I will try to assist you in working together to resolve this issue!
If NZXT CAM doesn't need to run, you can see if it starts automatically Task Manager "Startup" find NZXT CAM related startup items, click on them and choose to disable them.
In addition, you can limit the cpu usage when using it.
Open Task Manager, right-click on NZXT CAM, and select Go to Details. Open task manager, right click on NZXT CAM, select go to details, right click on NZXT CAM again, set priority to low; set correlation to reduce cpu usage.
Hope the above suggestions can help you! If you can't solve the problem, please click "Reply" to feedback related information and pictures!