Two months old PC (Windows 10), this glitch started to appear consistently. It's flickering.

I've updated graphics card driver from 49x to 511 to no avail. Tried the lowest graphics settings possible, glitch still there, also tried a clean boot disabling most services and programs at startup.

Don't have a screenshot of the GTA V glitch, but it's somewhat similar, occurs when looking in the sun..

Any ideas how to fix this? Is there a diagnostic tool to see if it's a faulty graphics card? What can I do?