I have a Nvidia GPU, which I understand is problematic with Linux. I’ve heard this is something can happen, so I assume it’s why the “Cinnamon” process is using around 20-40% CPU resources at all times. So, how do I switch to using GPU for that? I’ve installed Nvidia drivers through the driver manager already
Edit: I figured it out, SecureBoot was turned on on the UEFI-level. I disabled it and reinstalled Mint, and it seems to work now.
The Debian docs were really useful for me in setting up my 3090 on Debian proper.
Since Mint is downstream, maybe they will help you.
https://wiki.debian.org/NvidiaGraphicsDrivers