Hey there, KolbyPanda!
Thanks for reaching out in Apple Support Communities! If we understand correctly, you're experiencing a lag when using your keyboard with your Mac mini. We'll do our best to help get things running smoothly again!
To clarify, are you using a wired or wireless keyboard? If using a wired keyboard, can you try using another to test if this behavior persists?
If you're using a wireless keyboard, we recommend using the troubleshooting steps in the following support article to further assist with this issue:
If your Apple wireless mouse, keyboard, or trackpad isn't working with your Mac as expected - Apple Support
Should this persist, reply with the following details:
- Does this happen with other keyboards, or does your current keyboard exhibit the same issue when connected to another Mac?
- Is your Mac asleep when this happens, or is it completely logged out of your user account?
- Do you have the latest macOS version installed?
Take care!