You can try out the Proton-Cachyos with frame gen package if you’re on arch-based systems with pacman -U archive.cachyos.org/proton/proton-cachyos-1:9.0.20240928-1-x86_64_v3.pkg.tar.zst
or you can download custom tkg-proton with frame generation from mediafire.com/file/lv7d8jci0gyf6z0/proton_dlssfg.tar.zst/file and put into your ~/.steam/steam/compatibilitytools.d/
I’ve tried dlss frame gen on the finals and it seems to be working fine. Though at first I thought the audio crackling was because of fg, but it seems to be happening on all versions of proton.
Audio crackling is also an intermittent thing on windows for me since the latest season. Not sure if it’s the same of course but maybe it’s not solely on proton.