Try using a different graphics driver. Go to the Driver utility and run it. I think you can find it in Settings in Mint, although I'm not using Mint these days so you may need to look around for it. It will take a minute to run. It will tell you what driver you are running, and you can switch to a different one.
It's also a good idea to join the mint Forum. You will get a lot more help there.
https://forums.linuxmint.com/
Good luck!