Valve has made a significant update to its Proton compatibility layer, which is the basis of the Linux-based SteamOS operating system on the Steam Deck. The update brings several improvements and bug fixes, but it also adds support for Nvidia’s coveted DLSS 3 Frame Generation. The update for Proton Experimental rolled out on November 12, and it was spotted by Wccftech. Proton is the bedrock for gaming on Linux, and up to this point, Nvidia users haven’t had access to some of the best features of Team Green’s latest graphics…