Now it’s clear why the picture didn’t become smoother.
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In October 2023, owners of video cards from the RTX 20 and 30 lines reported that they had found a way to include frame generation technology from DLSS 3 in Portal: Prelude RTX. This was done by using the DLSS 3 Frame Generation 1.0.1 library. As a result of this, the game allegedly managed to enable frame generation, but because of this, serious problems began to arise with the uniform distribution of frames.
The day after the media drew attention to the players’ discovery, NVIDIA commented situation. The company clarified that in fact, frame generation in Portal: Prelude RTX does not work at all, despite the fact that the frame rate supposedly increases when the function is activated.
We noticed that some community members encountered a bug in the old v1.0.1.0 version of the DLSS DLL, which incorrectly considers frame generation to work on RTX 20 and 30 series graphics cards.
In this case, new frames are not generated, but existing frames are simply duplicated. The counters show that fps increases, but the image does not become smoother. You can verify this by using tools like NVIDIA ICAT or by looking at the error log, which indicates that frame generation has failed.
NVIDIA
NVIDIA reported that this error was present only in one of the older versions of the DLSS library, and it was fixed in subsequent ones. The company will release an update to RTX Remix to “prevent further confusion.”
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Frame generation from DLSS 3 is a technology that only works on video cards from the RTX 40 line equipped with fourth-generation Tensor Cores and an optical flow accelerator. It allows you to increase the frame rate in supported games by creating additional frames.
Frame generation from DLSS 3 was able to be enabled on RTX 20 and 30 video cards in Portal: Prelude RTX Editorial articles
However, it is almost impossible to play using technology.
