That's strange.. my Titan Xp can play MK11 max settings 4k no issues?
I used to have all my settings cranked to 11 but I've learnt you can get by with a weaker gpu and tinker with the settings and you'll be fine..
Mk11 aside, that is better at 1080p for me as I don't like stutters when I'm playing online mode.
Cyberpunk2077, Red Dead Redemption 2, Assassin’s Creed Odyssey, Assassin’s Creed Valhalla, Anthem, Total war 3 Kingdoms .....the list goes on.
None of these games can be played at 4k 60fps with medium/high settings on my 3070, I hope mine is not defective.