Big performance loss with LSFG?

[NikkMann]

Playing helldivers 2 normally I get around 72 fps. When I enable LSFG x2, my game fps goes down to about 45, with the interpolated fps being 90, but that kind of defeats the point if my true fps is now almost half of what it was without LSFG.
RTX3090, Ryzen 5900x

[cardy]

I had exactly the same issue - 7800x3d and RTX3080ti.

Tested Horizon Zero dawn - 100-110fps without, LSFG x2, I get 70fps
Soulmask - 110 fps without, 70 with.

I don't really see the point, if the FPS loss is so much?
Surely we're doing something wrong?

[Gizzmoe]

Originally posted by cardy:

Tested Horizon Zero dawn - 100-110fps without, LSFG x2, I get 70fps
Soulmask - 110 fps without, 70 with.

Have you capped your framerate to half your refresh rate before you run LS? Your GPU has enough headroom, you should easily reach 144 fps If you have a 144hz display, for that set framecap of 72 for x2 FG.

[cardy]

I'm running a 240hz monitor.

So I tried a few things:
1: Running both games on lowest settings, and hitting stable 140fps+ in HFW (160fps+ for Soulmask)
Then set framerate to 120 (both in game and tried using DLSS and Nvidia control panel)
Once LSFG is on, I can't hit 120fps, so I'm dropping over 40fps on Souulmask

2: I also just tried 80fps (1/3 of 240hz) cap, and doing LSFGx3.
That also introduces lots of losses to my averages too.

As soon as I turn on scaling, I suffer a big hit to my averages.
And I need to also turn off Gsync, which makes panning around in-game even more of a stutter-fest.

I'll keep trying but I'd love to understand why some other comments are calling this software "magical" etc.
Maybe it's my higher refresh rate increasing the overhead much more than for 120/144hz monitors??

* My next plan is to remove the 6600XT from my other PC, run the video signal to the monitor + Lossless Scaling through that GPU, and have the 3080ti running the game exclusively.
Wish me luck!

[Gizzmoe]

Originally posted by cardy:

IMaybe it's my higher refresh rate increasing the overhead much more than for 120/144hz monitors??

Of course. Upscaling to 240fps needs ton of GPU power, even more so at high resolutions. I, for example, have a 1080ti and a 2560x1440 monitor, in CP2077 with a render res of 1600x900 and a x3 framegen from 40 to 120 plus LS1 scaling adds around 30 percentage points to my GPU usage. You probably use 50-60% of your GPU power just for framegen alone with that 240fps... Which would be ok, if the GPU can handle it..

[KingDoob]

that's strange because i have a i9 (11th gen) and a 3070ti with 32gb ram and i get 70/210 with 3x or 75/150 with 2x on hd2 with max graphics settings but 8gb textures. did you select performance mode? i don't cap my frames on any game i use it on and have a 240hz monitor

[Omega Syrus]

Have you tried selecting the performance option for either scaling or frame generation? I encountered this in Starfield as well where the base frame rate was hammered. I also had this occur when an unfavorable capture method was selected.