I can no longer run two clients at the same time

Over the course of a year, I have gone from being able to run 3 toons on 3 screens all on High settings to now where the second client keeps crashing, making duel boxing impossible or at least unstable(for me).

System Specs :

AMD Ryzen 9 5900X 12-Core Processor 4.28 GHz
64.0 GB RAM
GTX 1070ti
1TB m.2

The processor was upgraded a couple of months back from an intel i7 6 core cpu. I’m sad to think its finally time for me to have to upgrade to a new card and get rid of the 1070ti but it’s also annoying the game ran great a year ago vs now, seems like everything is just getting added with little optimizations or maybe it’s just the end for the 1070ti =(.

So as I come looking to upgrade, does anyone out there with a nice new RX 7900 knows how well 3 clients run, or at least 2?