sudden change

TLDR: After restoring a restore point, lots (but not all) things are suddenly very slow to respond. Apologies if this is hard to follow, I posted things as I randomly thought of them. A few days ago, I made a restore point, as I was troubleshooting with a game company about their game crashing...

My Device: Acer Nitro 5 AN515-57 (Already upgraded my RAM to 16GB, and have added Kingston NV2 PCIe 4.0 NVMe M.2 SSD 500GB). After booting up my laptop, it works fine and smooth for any games I currently playing. But after a few minutes of playing session, the laptop suddenly lags and the audio...

I have a problem with intermittent change in size of my mouse pointer, cursor, etc. I have my settings at minimal, and at a fresh reboot, they are all the correct size. Yet, for some reason, they all suddenly switch to BIG! I recheck my settings and they are all still at the minimal setting I...