Question / Help i7 5960x stream lags but no frames drop

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Jerry Yu

Member
Hi all, I tried streaming on my PC with an i7 5960x OCed to 4.2hz and a quad sli 980 but I'm getting stream lags while streaming, and previewing through OBS but no frames are dropped. My games not lagging and I don't feel the lag when playing, but when I preview or when I stream and watch my own stream it feels as if i'm lagging every 1.5 seconds.

CBR/CBR padding: ON
CFR: ON
Bitrate 3500 (my upload is 20000 kbps)
Bitrate Buffer 3500
Resolution: 720p (native 1440p)
preset: veryfast

Here is my log file
https://gist.github.com/45765b9e80c14bfa4410
 
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Jerry Yu

Member
Mmm...

Weird. I watched my twitch playback with preset: medium 720p and lanczos filter, no lag at all but when I watch my preview on OBS it lags. I guess it's just OBS then.
 
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george passmore

Member
drop the bitrate to about 2900 ish , with a higher preset you dont need as many bits as most of it is pre renderd your side and not the viewers side
3500 is the top of twitch allowance unless partnered with them

i did have mine on 3500 but gradually dropped as people complain about "buffering" issues
 
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Jerry Yu

Member
Thank you, I'll try that!

edit: What should my padding be? 2900 too?

what if I have my preset on medium? should i keep it on 3500?
 
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george passmore

Member
lower preset lower bit rate
padding just give it more bitrate if it should need it, im not sure on it
but try keeping it the same
even disable may be a benefit
 
Sapiens

Sapiens

Forum Moderator
@george passmore Unfortunately none of your suggestions so far are relevant to the OP's issue, please don't advise users to test changing random things like CBR padding when you have no idea what they do. I seem to recall making a similar request of you in the past... :)

@Jerry Yu If the video OBS outputs (not the preview) looks fine then this may not even be worth addressing. I would initially suspect your SLI setup. As a test you could try disabling SLI, running on a single card and seeing if that helps. Normally I would also recommend lowering your C920 resolution to 720p as it frequently causes performance issues at 1080p, but your log file doesn't indicate any problems.
 
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Jerry Yu

Member
@Sapiens I have my preset on Medium. Do you think the quality difference between fast and medium is worth the CPU pressure? What about faster and fast?

edit: And what do you think about Avermedia LGP? Does it help lessen the load on the CPU?
 
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Sapiens

Sapiens

Forum Moderator
If everything runs okay on the medium preset (games perform okay, OBS doesn't skip a bunch of frames because your CPU can't keep up, etc.) then use medium. With a 5960X I doubt you'll run into much trouble at your current settings.

A capture card in a single PC setup absolutely will not help with performance and you already bought a ridiculous processor so don't waste your money. They're great for 2PC setups and capturing other devices like consoles but terrible at encoding.
 
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Jerry Yu

Member
If I have a laptop with i7 4770k and gtx 770m? Can I use a capture card and use my laptop to stream? Would that be a better option?
 
Sapiens

Sapiens

Forum Moderator
I don't feel it would be worth investing any money in a 2PC setup at this point given the presumably exorbitant amount you already spent on that 5960X (and the X99 board and RAM that went with it), which is pretty excellent for encoding but more or less a waste just for gaming. You would also have a difficult time finding any consumer-level capture card that would accept 1440p input.
 
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Jerry Yu

Member
I actually already do have that laptop, I just layed it out as an if.

I guess I'll stick to my pc for streaming!
 
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