Macbook pro cursor glitch on second display

Hi chatkins82, We appreciate you reaching out to us.

On top of the steps you've performed, let’s test if the issue persists on a newly created user account. 

1. "On your Mac, choose Apple menu > System Settings, then click Users & Groups  in the sidebar. (You may need to scroll down.)
2. Click the Add Account button below the list of users on the right (you may be asked to enter your password.)
3. Click the New Account pop-up menu, then choose a type of user.
4. Enter a full name for the new user. An account name is generated automatically. To use a different account name, enter it now—you can’t change it later.
5. Enter a password for the user, then enter it again to verify. Enter a password hint to help the user remember their password.
6. Click Create User."

You can use the article below as a reference.

Add a user or group on Mac

If possible, test if the issue persists on a different external monitor.

Performing this step will help further isolate the issue.

Take care!