6900 xt, i9 10900k, 64 GB DDR4 RAM @3600 Mhz. 1440p.
Asking for specs while this game is obviously unoptimized in Act 3 just makes you look like a useful idiot.
An average PC at best, I have zero performance issues in Act 3 on a 13600K, 3080 Ti overclocked, and 32 Gb ram running at 4300 CL14 G1.
The only place I get a lot of slowdown is the fire stuff in Waukeens Rest.