Everything Looks Gritty and it seems like no anti aliasing. YOUTUBE LINK in description PLZ HELP

Feb 3, 2019
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https://youtu.be/jsIhLRWe_PI

Hey guys. Im having a really weird issue.
Recently ive been messing around with my pc. Going through system32 and opening up the pc to switch out some fans. Unfortunately. Through all this work, i encountered this issue along the way. The video in the link provided shows my problem. This issue is NOT just for games. anything i do on this pc has poor anti aliasing or something. I tried so many different things to fix it.

Resetting pc completely.
changing settings on the monitor.
changing the settings on the Amd software.
changing the drivers to previous
uninstalling and reinstalling drivers multiple times.
I tried to switch out graphics cards and it still looks the same.

Amd Rx 580 oc 8gb
Intel Core I7-7700k
16gb ram
Asus Z270-A

I always run my games on ultra and get awesome fps.

Before this issue. ALL my stuff was running BEAUTIFULLY. Now it looks terrible, gritty, aliased.
I really need help on this.

Thanks, Dan.