mine is a bit outdated and usually preffer 60hz for my games but it was added in the 580.82.07
www.phoronix.com
here is a thread where its discussed how well it works I assume is in the same app
about "DLDSR" I am not sure about what it stands for, are you refering to DLSS, frame motion? unless I misunderstand the feature you are asking, it needs to be enabled per game in launch options in proton
If that is what you mean it was added in march
- Added support for NVIDIA Optical Flow API and DLSS 3 Frame Generation.
- Support DLSS in DX11 and DX12 games (guarded by PROTON_ENABLE_NVAPI=1 and dxgi.nvapiHack = False).
here is a more recent changelog
Compatibility tool for Steam Play based on Wine and additional components - ValveSoftware/Proton
github.com