DLSS is a form of machine learning developed by Nvidia that uses an AI model to analyze in-game frames and construct new ones at higher resolution or in addition to the existing frames. It uses Supersampling to sample a frame at a lower resolution, then uses that sample to construct a higher resolution frame. It can also take a frame sample and use it to generate additional frames, which in turn boosts the frame rate. DLSS 3.5 also has ray reconstruction, which improves ray tracing by replacing the pixels between ray-traced samples with AI-trained offline-rendered images. Users can now choose what level of DLSS to apply between Performance, Balanced, Quality, and Ultra Quality.
