Inconsistent FPS

Development Rendering
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1

UE Editor was running great… Getting 120fps in pretty heavy scenes and the 3090 was pulling about 500 watts… Then freaking windows wanted and update… Now even the sample scenes will only run at 18fps and the 3090 is pulling about 100 watts…

I tried rolling back my nvidia driver… I downloaded the EVGA precision app for controlling the GPU power and memory clocking… Upped the power and overclocked a bit… FPS went up to about 25fps… and power used went up about 50watts…

Next I tried updating the nvidia driver back to the current one but using the gaming driver rather then the studio (creator) version… Then bam back to 120fps and 3090 was pulling the right amount of watts…

Then today I started up my computer and launched UE… Back down to 18fps… Ugh so aggravating…

Anyone having the same issues? Anyone know why this might be happening? Why did changing the driver back and forth fix it… Then with zero updates or changes it went back to low fps?

Thanks for any insights!!

System: Windows 11 Pro
AMD 7950X
128 Gigs Ram clocked at 3600
RTX 3060 - System Graphics
RTX 3090 - Dedicated UE Graphics
1000W Power Supply

2

Have you tried using only your 3090?
Maybe your 3060 is causing some kind of confusion to the engine.

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I have had this problem when I was just running the 3090 by it self also… and in the system task manager i can see that only the 3090 is being used with UE…

Its just so weird that it was working fine… Then shut down UE and computer went to sleep… not shut down… then open up UE next day and get low fps…

How is that even possible?

4

Ok figured it out… Multiple GPU drivers were installed… Once that got cleaned up it was fine… I used a program called DDU to remove all the old drivers then did a fresh install… Just fyi you want to boot in safe mode to use DDU correctly

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