Proton GE, the community-built fork of the Proton compatibility layer for Linux has a big new release out.
Need a quick reminder? Wine is a compatibility layer that can help to run Windows apps and games on Linux. Valve have their own version called Proton which is included with the Linux Steam Client in Steam Play, and Proton GE is a special version of it built by user "GloriousEggroll". Why use it? You might find certain games need adjustments not currently in the official Proton and Proton GE can make them run "out of the box".
Proton-5.9-GE-3-ST is the brand new release aimed to now be the stable Proton GE release. It pulls in tons of fixes to help various Windows games run on Linux including GTA V, Metal Gear Solid V: Ground Zeroes, Planet Zoo, Jurassic World: Evolution, Origin client fixes and much more.
You can find the release on GitHub. If you wish to install it into Steam, the process is quite simple as Steam auto-detects new tools added for Steam Play as long as you put them in the right folder. For normal Steam use you can download the release build of Proton GE (Proton-5.9-GE-3-ST.tar.gz) and extract it into here:
~/.steam/root/compatibilitytools.d/Create the folder if it doesn't exist.
Then reboot Steam for it to show up as an option to force on a game. More info on the Proton GE GitHub.