Nvidia officially released the DLSS 4.5 Ray Reconstruction update on August 25, 2026, designed to improve ray tracing and path tracing shadow and lighting fidelity across all GeForce RTX GPUs [1, 2, 3]. The update introduces a second-generation transformer AI model that replaces traditional hand-tuned denoisers, reducing artifacts such as blurring and trailing in motion scenes [1, 2, 3].
According to Ike Nnoli, Nvidia senior product marketing manager, "It builds upon our Super Resolution second generation Transformer architecture... This model itself has deeper spatial awareness and additional developer controls, so you’ll get better lighting accuracy and responsiveness, [plus] clearer motion in raytraced [games]." This marks a 20% increase in processed parameters over the previous version, contributing to clearer shadows and more detailed lighting during motion compared to DLSS 4 [2, 3].
DLSS 4.5 Ray Reconstruction offers about a 35% improvement in compute performance while maintaining similar overall performance levels [3]. The update also includes new features such as per-game Resizable BAR adjustment, G-SYNC Pulsar support, and borderless window optimizations. Nvidia plans a formal app update including these features in September 2026 [3].
The DLSS 4.5 technology will be integrated into upcoming path traced games, with 007: First Light receiving the update on its September 15 release and Control Resonant on its release scheduled for September 24 [2]. Nvidia previewed the DLSS 4.5 second-generation Ray Reconstruction model earlier in May 2026 at Computex [3].
