It depends on how large the monitor would be and how far away you’d sit. My setup has me sitting only a couple feet away, so a 25” 1440p is hard to improve upon for gaming. For me, it’s better to stick with lower res and get a couple more years of Ultra settings out of my card.

If you’re wanting something closer to 32” and several feet away, 4k will make a huge difference because you’ll get the same apparent clarity from much further away.

Another 4k use case is any at-home office work. If you regularly code or write on your gaming monitor, 4k IPS can help a lot with the readability of text. (Not a 4k VA, though. That’ll make text notably less readable.)