GloriousEggroll has released a hotfix for their Proton-5.6-GE-1 release.

This is my build of Proton with the most recent release of vanilla wine, has ffmpeg enabled for faudio by default, and all of Proton's patches ported over to be applied to wine, as well as wine-staging and vkd3d.

All patches:

-Warframe screenshot F6 patch -FFXIV Launcher patch -Mech Warrior online patch
-Assetto Corsa HUD patch -Vulkan child window patch
-sword art online gnutls patch
-d9vk integration
-vkd3d integration
-protonfixes integration
-FAudio with FFMpeg enabled (fixes audio/voices in multiple games)
-All of Valve's wine proton patches. Yes. All of them.
-wine staging patches
-various wine hot fixes for wine functionality that fix regressions per version

New in 5.6 GE2:

-This is a hotfix that reverts the fullscreen hack changes, as they introduced a regression with mouse stutter on movement after a period of time. What this means:
-Fullscreen hack is still enabled, it's just using proton's version, not customized for staging
-Staging's winex11.drv-mouse-coorrds and rawinput patchsets have been disabled
-Proton's rawinput patchset has been re-enabled.

Normally I'd wait to release smaller changes like this, but the regression made some games basically unplayable. This should allow games to be played at least without the mouse stutter.

Download Proton 5.6-GE-2 from GitHub
Installation Instructions