3080, getting 20-50% for GPU usage. Is there any way to change this?

mandyart21

mandyart21

New Member
My partner's been streaming games for awhile, and it's been working fine for a long time. Over the past couple of days, the stream was suddenly freezing completely.

We were able to mend the situation with a few things. Installing the new Windows update made a big difference, and brought it from being completely frozen to working, but dropping frames and varying speeds. We cleared the memory a good amount by putting some heavy files into an external drive. We checked "Limit capture framerate" in the Game Capture. (We have a Game Capture, a Web Capture for chat, and a camera (no Display Capture).) We turned Game Mode on, and made sure that OBS was being run as an Administrator.

All of this combined brought the GPU down from being at 99%-100% and dropping frames, to now varying from 40-90% total (20-50% being OBS, the rest being the actual game for the most part). It's finally stable in Twitch Inspector, but I can't help but feel like it shouldn't need that much given his computer's specs. It's mentioned in the full log as well, but these are his specs for reference:

AMD Ryzen 9 5950X 16-Core Processor
GPU: NVIDIA GeForce RTX 3080
128GB RAM, Windows 10

I feel like we've just crossed over the threshold from "stream not working" to "stream working", which is good progress. But is there anything else I can do to optimize OBS so that it isn't taking so much GPU?

Log file: https://obsproject.com/logs/Yq-5JMuXQrHoZWbB
 
FerretBomb

FerretBomb

Active Member
OBS itself generally doesn't use much GPU time. A tiny slice at most, unless you're using a ton of filters (and you are not) or 'heavy' browser sources (also, you are not).
You're using "nVidia Broadcast" for your microphone, which IS known to go crazy sometimes, and DOES absolutely use GPU resources for its cancellation processing.
Additionally, you're using a BRIO, which look great on paper, but are actually horrible little crapbox basketcases that can cause MASSIVE systemwide problems. I have two sitting on the shelf because I finally gave up on trying to get them to work and not break stuff.

Would recommend disabling nVidia Broadcast as a first-step though; it's the most likely root cause. Move the mic closer to the mouth, run the gain lower to exclude more ambient noise. Possibly switch to a dynamic if you're using a condenser, as condensers are designed to pick up EVERY SOUND EVER, since they're meant for use by vocalists in soundproofed sound booths with zero other noise.

If turning off nVidia Broadcast doesn't work, unplug the BRIO.

Your logfile shows minimal skipped frames due to rendering delay; at 0.1% though it's really nothing to worry about and could be caused by game texture load-in. You might also want to run GPU-Z and enable the 'create GPU load' to kick it out of an idle state, and make sure it's running at full PCIe x16 mode, and not split down into x8 mode (which can cause those texture load-ins to cause the problem due to the narrower bus bandwidth).
 
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