Have your tried activating G-sync/V-sync?
V-sync = locking your FPS to your monitor refresh rate, meaning if you have a 60hz monitor, V-sync will cap your FPS at 60.
G-sync = adjusting your monitor's refresh rate to your FPS, meaning if you have a 144hz monitor, you get 89 FPS, G-sync will adjust your monitor's refresh rate to 89.
V-sync is available on ...
The Reason is a GHOST Epic Games account has been created, and you no longer get the activation screen.
To sign into that GHOST account you need to set it up first.
Login to Epic Games using your Xbox Account, EPic games will ask you for Name and Details to setup account.
Once logged in you can now navigate to the "Account - Connected Accounts" area and ...
Epic Games will tell you "It cannot be done they are permanently linked."
Politically they are correct. Technically they are wrong.
The reason is something to do with their policies.
I did not try to prove them wrong politically.
Technically all I did was (on EpicG) swap my sons username and email address to my username and email address and vice versa. ...