Community modders have released an unofficial update for AMD's FSR technology that brings version 4.1.1 to older RDNA 2 graphics cards. This development matters because official AMD support for this upscaling standard on RDNA 2 hardware is not scheduled until 2027. Gamers using legacy hardware can now access newer image quality features without waiting for a driver update from the manufacturer.
OptiScaler patch bypasses hardware checks for legacy GPUs
The update comes from the OptiScaler modding team, who have ported the FSR 4.1.1 code to work with RDNA 2 architecture. The mod bypasses the INT8 hardware check that normally prevents FSR 4 from running on these older GPUs. This technical workaround allows the software to function on devices like the RX 6000 series and the Steam Deck.
Users upgrading from FSR 4.0.2c will see a performance improvement ranging from 2% to 5% according to testing by Ancient Gameplays. The mod also reportedly reduces shimmering and ghosting effects compared to the previous patch. These visual improvements are part of the core changes included in the 4.1.1 release.
We looked at the last FSR update earlier while tracking AMD's rollout, and several of the same balance and stability themes came up. The modders warn that this software modification may trigger anti-cheat warnings in multiplayer games. Players should be aware that using this unofficial patch carries a risk of being flagged by game security systems.
The OptiScaler team has released FSR 4.1.1 for RDNA 2 as a community-driven solution for legacy hardware users. The patch offers modest performance gains and visual fixes that AMD will not officially provide for years. Users can install the mod to improve their gaming experience, though they must accept the potential compatibility risks.
Source: TweakTown
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