Bug Report OBS insane kb/s spike and in-game FPS drop

[divadc]

Hi everyone,

I have been trying to stream for a while, and I really like OBS' features, so i have tried to get it to work. However i have been running into some seriously weird problems.

I have an upload speed of 14K, so the problem has never been my own network, however OBS has NEVER been able to keep a steady kb/s. I'm not talking about setting it to 2500 kb/s and it then goes up to 3000. No, it spikes as high as 50K! And no internet connection will ever be able to sustain such an upload. And i get these spikes regularly no matter what kb/s i set it to, no matter how i turn the resolution up or down and no matter what game i set it to.

I have tried everything I could find on these forums. This includes this https://obsproject.com/forum/threads/your-guide-for-achiving-a-strict-cbr-with-obs.4516/ which actually helped, but didn't stop the issue. After analyzing my log-file i changed my webcam to a global source. It helped a bit, but again, didn't solve the problem. The other flaws the OBS analyzer found were "bad server selected" but i have the one closest to me and "Skipped frames detected", but as already written, i already tried to lower my FPS and solution to no affect.

NOTE: The games run absolutely fine within a +/- 2K kb/s spike.

 

[dping]

next time, post your topic in the help and support section,

13:16:17: Using custom x264 settings: "tune=animation"

as it stands, turn off tuneanimation from your custom x264 settings,

13:16:17:     max bitrate: 3500
13:16:17:     buffer size: 1050

set your bitrate and buffer both to 2500

PERFORMANCE WARNING: Scene change took
1651 ms, maybe some sources should be global sources?

remove all sources from all scenes and readd ALL sources to global sources then add the global sources to the areas you want them in.

try this new utility from R1CH
http://www.teamliquid.net/forum/tech-support/478845-twitchtest-twitch-bandwidth-tester

and post a screenshot of your results.

with CBR and badding OBS does not spike the bitrate without stalling scene changes or custom x264 settings, I have tested this to almost the extreme. with a random color and charactor generator at 720p and the bitrate didn't budge.

13:17:57:     chosen type: MJPG

is there a reason why you chose MJPG for your webcam type? just curious, I dont know many people who use that.


you might see it spiking but maybe this happens when your scenes are stalled. but monitor the actual network usage

 

[divadc]

Thank you for the reply!
I have posted this other places, and got alot of feedback as well. I fixed the OBS spike lagg by changing to Quicksync instead of x264 as my Laptop supports it better than it does with x264. (this however still causes my game to have FPS laggs, so i will definetly try to change everything to global!)

as for my webcam, I only just used the default settings for my build-in webcam. Not a consious choice ;) I'll try changing it up a bit, too see if anything works better!