Hello joshuamccann94.
Thank you for using Apple Support Communities. It sounds like you're experiencing issues with your MacBook Pro. Specifically, your mouse appears to lag when in use. We can understand how this would be an issue. Allow us to investigate this issue and assist in any way we can.
Ever since this issue started to occur, have you been able to restart your Mac to see if that helps?
Log out, sleep, wake, restart, or shut down your Mac - Apple Support
If you've already tried this step with no success, you can test this issue in safe mode. Safe mode is a great way to isolate issues caused by software. Just in case, the following resource can guide you:
How to use safe mode on your Mac - Apple Support
You'll want to follow the steps listed under "Apple silicon". If you notice this specific issue continues to occur in safe mode, you'll want to reinstall your macOS. This process can take several moments to fully complete. We'll include a resource below that can guide you through that specific task:
How to reinstall macOS - Apple Support
Feel free to keep us posted. Best of luck.