Been doing looking into dp 1.4 and 2.1
Amd dp 2.1 but Nvidia got the power and got the dp 1.4.
Thinking about putting a spanner in the works and waiting for the next gen on Nvidia card, the 5000 series that should hopefully have dp 2.1
If you're worried about the refresh, I wouldn't be. You'll struggle to maintain 120 fps @ native 4K in the newer games, even with a 4090.
For now thinking about getting a Nvidia 3700 or 3800 which should be ok for now as a stop gap.
Think about those two cards should be on to run 4k or vr for the time being?
As said above, they will both struggle @ 4K nowadays and I don't think they make sense anymore with the 4070 out, unless they're cheap.