Bug Report OBS exhibiting weird FPS behaviour/CPU usage

I

InternetSandman

Member
I'm not currently trying to stream or record anything and I only have my capture card (1080p60) set as a source. When I have OBS running in the background, it behaves fine, the FPS counter at the bottom shows a solid 60fps, even though CPU usage is mildly high (27%). The moment I bring OBS into focus to actually do anything, performance drops to less than 30FPS, and I can't figure out why. I've disabled all power saving features on my computer and I've used this computer for months to stream (720p60) and record (1080p60) simultaneously for hours at a time. This behavior only started last friday as far as I could tell
 
I

InternetSandman

Member
sam686 said:
Which capture card are you using?

Did you or your computer update anything? (windows update, OBS-studio update, game update)

Show us OBS-studio logs.
https://obsproject.com/forum/threads/please-post-a-log-with-your-issue-heres-how.23074/
Click to expand...

I can have a completely new scene collection with zero sources and it still exhibits this behaviour

it's possible that the windows 10 creator update changed something, though I can't see how that would cause this behaviour

I can't produce a log considering I'm not streaming or recording anything
 
B

BornDownUnder

Member
Really need a logfile uploaded with a recorded/streaming attempt (At least a few minutes' worth) to further assist in troubleshooting.
 
B

Batpimp

New Member
I'm having the exact same issues.. been streaming for a year without problems then today it doesn't work.
same. starting to week Major fps loss
 
I

InternetSandman

Member
Hopefully this log file is enough to pinpoint the problem, as I said the behavior persists even in a whole scene collection with zero sources
 

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  • 2017-11-07 20-24-22.txt
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S

sam686

Member
Did you or your computer recently updated or changed something from a few weeks ago?

Using high refresh rate and G-Sync? Try to turn off g-sync.
https://www.google.com/search?q=g+sync+10+creators+update

Log shows: Windows Version: 10.0 Build 16299 (revision: 19; 64-bit) .. this is the newer windows 10 "Creators update" that came out a few weeks ago, which might have broke a few things like maybe windowed g-sync.

Try QuickSync instead of NVENC, to free up some NVidia GPU processing power for games and OBS-Studio's rendering.
 
B

BornDownUnder

Member
Only things I could suggest are:
Try running OBS Studio with Administrator Rights, set OBS Studio to have to High Priority Process.
Try a clean installation of OBS Studio.
Try a clean installation of your graphics drivers, running DDU first.

Make sure your drivers are up to date for your entire system, it may just be an incompatibility playing out with your specific setup and ends up that OBS is the program to bring it to surface. Anything is possible with Windows, especially after a large content update.
 
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