A new DLSS 5 mod, FoveatedDLSS5, borrows VR foveation techniques to reduce neural rendering load on ultrawide monitors. Built by maximedgoulet as a ReShade add-on, it maintains full resolution centrally while lowering pixel processing toward screen edges. In a Reddit post, the modder reported The Witcher 3 achieving 80 FPS on an RTX 4090 at 7680x2160 with 2x multipass, a gain of over 60% from 49 FPS. Default settings process about 71% of original pixels at 7680x2160, dropping to 93% at 4K and deactivating at 3440x1440 for 16:9 and 21:9 users.
The mod requires neural rendering to run after upscaling, preventing use with the Neural Upstream trick. It is pre-release tested in one game and may cause softer edge detail or brief shimmer when sliders adjust. Similar projects include CheekyFoveatedDLSS, which adds eye-tracked VR foveation since early September.
This community fix follows other DLSS 5 optimizations, such as second-GPU mods, while NVIDIA prepares an official update for RTX 40-series cards. Currently, DLSS 5 officially supports only RTX 50-series, with RTX 40 support pending.
Source: TechPowerUp News · Summarized by HeadlinesBriefing