Vulkan-to-DirectX 12 translation tool used in Valve's Proton now supports AMD's FSR4 and Anti-Lag, while Nvidia's DLSS4 remains unsupported — FSR4 now also works on older GPUs, VKD3D-Proton v3.0 brings other performance improvements
Read post on tomshardware.com
Version 3.0 of Proton gets released, featuring a variety of bug fixes and performance improvements for DX12 games, and also adds support for big features such as FSR 4, Anti-Lag, and Work Graphs.