Valve has enhanced the capabilities of Proton, a software compatibility layer for playing Windows games on Linux, used on both Steam for Linux and Steam Deck. A new feature is the support for NVIDIA technologies such as DLSS 3 Frame Generation and NVIDIA Optical Flow API, which calculates pixel changes in each frame, improving object motion capture in videos.
The addition of DLSS 3 Frame Generation support by Proton boosts frame rates when playing games on Linux, as it moves away from CPU-based frame generation, which was previously exclusive to Windows. This feature is currently part of Proton version 9.0-3 Experimental and will take some time before being integrated into the stable release.
TLDR: Valve upgrades Proton for better gaming performance on Linux by introducing support for NVIDIA technologies such as DLSS 3 Frame Generation and NVIDIA Optical Flow API.
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