Question / Help High CPU Usage when Recording using ADVANCED settings vs SIMPLE

achmetha

Member
Edit: I'm stupid. It's my extra audio tracks. Nevermind.

Hi!
I've been messing with hardware encoders such as NVENC & QSV, but I noticed something peculiar when comparing CPU usage when choosing Simple Output Mode.

When using SIMPLE, CPU usages is about 2.7-3.5%. Pretty low as expected. However, I've tried multiple settings in ADVANCED output mode and noticed the CPU usage jumps to 12-15% using the same hardware encoder.

I have even copied the exact settings simple output uses (based on log) and used them in advanced output - the CPU usage still peaks at about 15%. This happens with both QSV & NVENC.

This is mostly noticable on my laptop, however, I do see a difference on my desktop as well. (It's not nearly as significant - simple: 2.1% vs adv: 4%)

Just curious if this is a normal behavior when outputting with ADVANCED vs SIMPLE.

Log forcing OBS to run on integrated:
https://gist.github.com/e7166440ae0e2b19d0732d65f66332d1

Log forcing OBS to run on nvidia:
https://gist.github.com/138c55ce223c9f9f3eb9a1148fff50da
 
Last edited:
Loading up D3D11 on adapter Intel(R) HD Graphics 4600 (0)

both logs indicate you run obs on intel hd - bad idea. obs needs to run on "main" gpu that runs the game
 
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