Question Just put in new parts, some games cause my screen to freak out?

Dec 6, 2019
7
0
10
Just installed new parts into my PC:
-Ryzen 7 2700
-Gigabyte B450M DS3H
-XFX Radeon RX 580 GTS XXX

I've kept all my game files on my HDD, and wiped my SSD to reinstall a fresh copy of Windows. However, some games (Overwatch and CS:GO so far) cause my screen to completely freak out. Black lines, colored lines, black screen, etc. Every other game works completely fine though. Any clues as to what it is about these two games that doesn't sit well with my computer? (And yes, I've already scanned both games for missing or corrupted files, nothing comes up)
 
Dec 6, 2019
7
0
10
Lowering max FPS to 30 completely removes the issue but clearly I want to run these games at a higher rate, just dropping this in if it helps anyone find a fix. Never faced this kind of issue before.

UPDATE: NEVERMIND!
 
Dec 6, 2019
7
0
10
Another update: Could it possible be the GPU not receiving enough power? The cable I used was from when I first got my PSU, so it's at least 4 years old and the box it was in had been through a lot.