Question / Help OBS high CPU usage

[Damoxige]

I have a dual pc settng. Here are my specs:

Running lastest OBS studio
4790K CPU
16 GB RAM
Avermedia C985

OBS settings:
-OUTPUT: CPU usage Present: Medium
Bitrate: 2700
Buffer size:2700
VIDEO:
Base Canvas: 1920x1080
-Output Resolution: 1920x1080
Downscale Filter: Lanczos
Common FPS Value: 60
-



Do no think other detaiils are important.
I have not stream for a while and tried today. Well, my CPU temp is overall 35-40 C and can go top 50 C. and CPU usage when streaming 20-40 % as recall. Well today that was not the case.
Noticed my stream was choppy and saw my CPU temperature was 80C+ and the usage 90-99 to 100 % for a sec at times. But this was when playing a "be right back scene." If not, the cpu would be like 70-80 %. If not streaming, OBS would be like 30% usage which is high based on my experience.
I eneded updating OBS because i was running a few updates ago, and updated some Windows stuff, which they tend to give you high cpu usage. Yet, this did not solve anything. I restarted my pc few times, the last time, it was the same, yet i have OBS open now and does not give me the same % even with one video running (no streaming)

 

[Beardedbob]

Hi,

Checking the log its showing the following "
16:46:56.540: Output 'adv_stream': Number of skipped frames due to encoding lag: 636 (73.1%)
16:46:56.540: Output 'adv_stream': Number of lagged frames due to rendering lag/stalls: 23 (2.5%)"

The cpu preset is set to medium also which can be intense on the CPU and could explain, lower this down,
your trying to stream 1080/60fps also which is even more intense so if the cpu preset doesn't help trop 720p 60fps or 30fps report back.

given your bitrate is only 2500 then 1080p one look great even at 30fps.

 

[H4ndy]

Your CPU is too slow to handle 1080p with 60 FPS on Medium preset together with a game. Switch back to veryfast. The bitrate is also way too low for that resolution, downscale to 1280x720 and try 30 to 60 fps.

 

[Damoxige]

I understand about the CPU but never had issues with 1920 by 1080 nor by 60 fps...so a 4790k has not the muscle? Keep in mind is a streaming pc, i have a gaming pc too, a dual set up.

 

[Beardedbob]

The 4790k is fine if its just running the stream @ 1080p 60fp,

I think the problem is what I had recently where the GPU is the issue on the streaming PC even when running cpu x264 encoding. Can you confirm that the Intel(R) HD Graphics 4600 is the GPU you are using in this pc? if so then I suspect this would be the issue as it can't hand the 1080p even though you are using software x264 it still goes via the GPU for some of the workload.