DLSS will now work for DirectX games, not just Vulkan games under Proton. Version 6.3-8 of Proton, the compatibility layer that allows Windows games to be played under Valve’s SteamOS operating system, provides official support for DLSS in DX11 and DX12 games. This is the latest version; In addition to better compatibility with anti-cheat software, it also fully supports NVIDIA DLSS.
With broader DirectX support, a lot of games are now also available for Linux-powered DLSS operation via Proton; however, as there are only a limited number of games that support DLSS, Linux gamers need to manually adjust a few parameters at this stage, as Gaming on Linux explains. It should also be noted that the Steam Deck, which uses the Proton system, can also benefit from this feature.
Proton now also supports BattlEye anti-cheat system
Other features include a host of new Proton-compatible Windows games, including Deathloop, Age of Orders IV, and Marvel’s Guardian of the Galaxy for AMD graphics cards only. What’s more, Mount & Blade II: Bannerlord and ARK: Survival Evolved also work well with Proton, using the BattlEye anti-cheat system.
BattlEye support is clearly good news, especially for Valve’s Steam Deck. Proton had serious issues with anti-cheat apps that broke compatibility with Windows games using these systems, but that issue appears to be gone now.
The only thing that developers need to do for their games to have Proton support is to contact BattlEye and state their wishes. Therefore, in addition to the two officially supported games we mentioned, it would not be wrong to say that more games will be compatible soon. However, it seems that Steam Deck will not be able to take advantage of this, as DLSS is a proprietary NVIDIA technology and Valve’s handset uses an AMD chip with an integrated RDNA 2 GPU. On the other hand, the same is not true for AMD’s FSR.
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