Portal with RTX DLSS 4.5 Support Status

Get the latest information on NVIDIA DLSS 4.5 compatibility, Frame Generation support, and FPS benchmarks for Portal with RTX.

Does Portal with RTX Support DLSS 4.5?

Status: Experimental

Portal with RTX is a pure Path Tracing demo. It requires DLSS 3.5 Ray Reconstruction to denoise the light bounces; without it, the image is a noisy mess. It is the gold standard for RR comparison.

DLSS Features

Super Resolution: Yes
Frame Generation: Yes
Ray Reconstruction: Yes (Native)

Performance Impact (4K)

Native: ~15 FPS
DLSS Quality: ~60 FPS
DLSS 4.5 (FG): ~120 FPS

How to Enable DLSS 4.5 in Portal with RTX

Use the 'Alt+X' menu to toggle DLSS Ray Reconstruction on the fly to see the difference.

Is it Safe to Swap the DLL?

For single-player games like Portal with RTX, updating the nvngx_dlss.dll file to version 4.5.10.0 is generally safe and can improve image stability, reducing ghosting and shimmering compared to the stock DLL file. Always use DLSS Swapper to backup your original file first.

Download DLSS 4.5 DLL
Check Other Supported Games