60% CPU Usage without recording?

[Calibury]

Specs:
i9-9900k
2080ti
32gb ram
NVENC Streaming with x264 replay buffer

Log: https://obsproject.com/logs/dCaxMDCx92zuv2sS

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I've tried a lot of things, but this issue is getting worse and worse. I've avoided the Talk scene as its been the worst offender of CPU usage, but now I'm just sitting with OBS open and its at 60% usage with my overall CPU being maxed at 100% @5ghz with OBS open?

I've tired removing the 'border sources' as there have been various threads and posts about media sources being an issue, but that hasnt worked.

 

[Calibury]

Did a new scene Collection via duplicate and deleted the media sources.
Does look like they were the issue. I've replaced them with images and the CPU is now at < 5%.

Weird, as they are only 1mb files.

Anyone have ideas on why they would cause such a high cpu usage?

 

[mlinaje]

In my case the same problem and after deleting all the OBS sources one by one, the problem seems to be a webcam in my case. The solution was to deactivate an existing webcam that was consuming 40% of CPU. By the way, after reinstalling windows I have not longer that webcam driver installed (it was the EOS as webcam SW that I was testing).
Best,

 

[Lawrence_SoCal]

An important thing to understand is that real-time video encoding is VERY computationally demanding.
When you start OBS, and are in a Scene, you have various sources, and OBS is rendering a scene. If you put OBS in Studio Mode, then you have 2X the rendering. Depending on Filters, Effects, plug-ins, etc can all drive significant hardware utilization.
Recording and/or Streaming then adds encoding work.

So, yes, just running OBS, depending on your settings (and related drivers as noted), can easily drive significant CPU usage.

 

[mlinaje]

The problem I was talking about is maybe more an issue than the regular CPU usage you are explaining. In my case, OBS was trying to render a webcam that is not only not connected to my PC at that moment, but the driver was not even installed (after a windows re-installation). I guess it's an issue because just deleting that camera from OBS scenes, OBS was from 60% to 4% CPU usage. Maybe it's an OBS issue trying to render something that doesn't exist.
Best,