Not sure about my GPU but 100% need a new monitor. I can't do 4k right now but do plan on upgrading. Not sure if I should future proof it or stick to 1080p.
This thing was a mess from day 1. It had a dead pixel and I couldn't take it back because the store only had a 2 week return policy which is how long it took for my PC to arrive. (didn't shop there again) Samsung refused to fix it because the dead pixel wasn't in the center. Then it started turning itself off, sent in 3 times, sent back 3 times claiming no problem. So no suggestions from Samsung or Sony.