NVIDIA is bringing its DLSS image upscaling technology to Linux users via Proton. This will enable supported games on Linux to leverage the Tensor cores on RTX GPUs for AI-based supersampling. NVIDIA said that DLSS will be enabled for Vulkan games this month followed by DirectX titles in the fall.
https://www.notebookcheck.net/NVIDIA-and-Valve-announce-DLSS-coming-to-Linux-via-Proton-starting-with-Vulkan-titles-this-month.542355.0.html