has updated Portal with RTX and the Half-Life 2 RTX demo to include DLSS 5, featuring 3D-Guided Neural Rendering. Released on October 21 and 23, 2026, these updates also introduce Multi Frame Generation with 5x and 6x output modes for .
Users must activate Neural Rendering via the RTX Remix menu using Alt + X, as it is disabled by default. The technology is exclusive to RTX 5000 and RTX Spark hardware. Additionally, RTX 4000 users gain Preset C for Frame Generation to accelerate images.
DLSS 5 utilizes an AI model with 118 million parameters to process geometry, textures, and lighting. These technical updates, which include Sparse Rendering and Windows on ARM support, focus on performance enhancements without adding new gameplay content.