Question / Help 40 FPS loss in game when streaming.

[JT619]

Hi there,

I have been using OBS for quite a while now streaming and recording LoL other AAA titles etc and yesterday i spent around 12-15 hours streaming and recording Fallout 4 and everything was fine.

Today i turned on OBS as normal clicked stream and my fps in game tanked from 60 down to 15-20 on the title screen, so i stopped did some restarts of applications opened back up Fallout and OBS clicked preview stream same again 15-20 fps. I tested downscaling the resolution to the lowest possible (640x360) and the fps does go up but only to 40.

I'm having the feeling my CPU has finally packed up but i would just like some feedback here first incase there is something i can do to fix this problem.

Thanks in advance.

 

[dping]

Hi there,

I have been using OBS for quite a while now streaming and recording LoL other AAA titles etc and yesterday i spent around 12-15 hours streaming and recording Fallout 4 and everything was fine.

Today i turned on OBS as normal clicked stream and my fps in game tanked from 60 down to 15-20 on the title screen, so i stopped did some restarts of applications opened back up Fallout and OBS clicked preview stream same again 15-20 fps. I tested downscaling the resolution to the lowest possible (640x360) and the fps does go up but only to 40.

I'm having the feeling my CPU has finally packed up but i would just like some feedback here first incase there is something i can do to fix this problem.

Thanks in advance.

Show me a log where you streamed Fallout 4 with an i5 at 1080@60fps? really I want to see, because that is honestly not enough of a CPU to encode that resolution let alone with fallout 4.

your issue is duplicate frames and encoder lag. Downscale to 720@30 or maybe even 720@48

 

[Boildown]

You have a problem with your H.264 Level: It looks like its set to 4.1, and it needs to be at least 4.2. Did you set it to that manually?

19:08:17: x264: MB rate (489600) > level limit (245760)

https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Levels

Also, when doing NVEnc encoding on a 600 or 700 series card (except the GTX 750, which is newer), use High Performance (HP), not LLHQ. That card can't do the better quality presets at 1080 resolution.

Get OBS to work for just saving to your hard drive first. Your duplicated frames should be less than 1% on 5 minute or longer tests. Until you can do that, don't bother trying to stream it. Until you have the H.264 Level set correctly, I'd judge most of the OBS statistics with suspicion.