I'm at my wits end when it comes to this problem, I didn't buy this laptop as a gaming machine but it's pretty embarrassing when even something as simple as Among Us becomes completely unplayable.
Games will run perfectly fine when I'm not touching any buttons, but as soon as I move my mouse around CPU usage spikes by at least 15% (and sometimes goes as high as 40%) and games become a slideshow (or just freeze entirely) until I stop moving the mouse. Sometimes this doesn't happen but it's completely random and eventually it starts happening again. I know it's the mouse causing the issue because games run smooth when using a controller.
I've tried looking online for any solutions when I found that turning down the polling rate of the mouse was supposed to help, but in my case it didn't change anything (I set my mouse from its usual 1200 to 200 and the problem still occurred). Turning down the graphics settings doesn't work either because the laptop is still capable of running them smoothly with a controller. I've tried reinstalling graphics drivers multiple times and even completely reinstalling Windows from USB a couple times and the issue still occurs, it seems like no matter what I try this laptop refuses to be anything other than a glorified Chromebook.