Foveated DLSS 5 Performance Boost
Popular graphics post-processing injector software ReShade, commonly used to mod DLSS 5 into unsupported games, now features a foveated imaging add-on alongside a standalone project. These tools allow DLSS 5 to focus processing power on what is directly in view, reducing overall GPU load and increasing frame rates.
Foveated imaging is a technique adapted from virtual reality to boost performance by rendering only the primary field of view at full resolution while decreasing resolution at the edges. This mimics human vision, where the eye perceives sharp details in a small central zone and lower fidelity in peripheral vision, making the reduction at the borders virtually unnoticeable.
I made a foveated rendering mod for DLSS5 than can double performance by reducing the resolution inputs near the edgesfrom r/DLSS
Neural Rendering Optimization
Instead of altering standard pixel resolution, the mods adjust the level of detail processed by DLSS 5 Neural Rendering. Because DLSS NR runs an entire AI model on the GPU in real time, it demands significant resources. Projects like maximedgoulet’s Foveated DLSS5 and ClarkCheekyKent’s CheekyFoveatedDLSS mitigate this heavy computational load by restricting high detail to the center of the image.
Both implementations allow users to configure the dimensions of the high-quality central region with independent width and height controls to match specific viewing distances and monitor setups. Users can also fine-tune the render fall-off rate to dictate how aggressively image quality decreases beyond the focus area.
Real-World Performance Gains
While Maximedgoulet's implementation relies on ReShade as an injector add-on, CheekyFoveatedDLSS offers a more streamlined standalone integration. Both approaches deliver substantial performance improvements; testing on an RTX 4090 running The Witcher 3 at an ultrawide 7680x2160 resolution showed frame rates jumping from 48 FPS to 80 FPS using 2x Multipass. This optimization makes neural rendering feasible for high-resolution ultrawide monitors that previously struggled with the heavy workload.
