Today DX12 has been partially fixed. In big cities (low GPU usage) DX12 performs slightly better than the DX11E (excluding the 0.1% low), but in thick smoke it lags far behind the
Game starts on 350fps then drops to 10fps a minute later? High to low GPU usage : r/Lutris
Low GPU usage, High CPU usage - English Support - New World Forums
GeForce RTX 4090 has been tested at 8K, up to 520 FPS in Overwatch 2 | VideoCardz.com