DLSS 3 On - but no fps gain. A | Forum

DLSS 3 On - but no fps gain. Any ideas?

I am testing a 4090. I installed the DLS 3 plugin (and Nvidia game drivers, also tried with Studio drivers).
I added to the level blueprint an "enable DLSS" node.

Also enabled DLSS 3 in the viewport.

Played with DLSS on and off. Changing screen percentage while viewing in Aximmetry. I see absolutely no change in frame rate (inside Aximmetry I change the screen percentage)

Any ideas of what I am doing wrong? (Or am I just CPU-bound?) Its weird to see zero fps gains)

buffos

TwentyStudios

DLSS has a performance overhead as well, so if you’re limited in performance by other factors than resolution it’s not surprising that you’re not seeing better performance. Also, the frame interpretation that’s new in DLSS 3 probably won’t work correctly with Aximmetry, since the camera signal doesn’t have any motion vectors.

That being said, have you verified that DLSS 3 is actually enabled and working?

buffos

>That being said, have you verified that DLSS 3 is actually enabled and working?

Yes. When I change the screen percentage below 50%, I get a message, that says DLSS cannot work with that percentage (or something like that)
Also, when working in the Unreal Engine Editor, I used the debugger and poked around with some DLSS variables.

I also enabled DLSS in the editor, in case I noticed some changes. I never saw any jump.

It looks like it's capped by maxFPS because all I see is 120fps in every project. I will do a little bit of trial and error.

The question now is simple. Is Aximmetry limited by that too? I mean, if the "starting point" is 120fps, then Aximmetry is capped too, since it will lower the final fps. From what I noticed, it is, since I got around 40fps on 1440p , 2160p and 1080p (I am not 100% sure about that last)

I ll do the tests and report back

buffos

It is true that changing maxFPS raises the FPS, which Unreal by default caps. On the other hand, that increase is not reflected in Aximmetry.
I will keep investigating with DLSS profiles instead of changing screen percentage.

DLSS 3 On - but no fps gain. Any ideas?

Cookie consent