streaming off xsplit massive fps drop

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On August 02 2012 05:32 Nevermore214 wrote:
Have you tried dropping the video bitrate down to 800-1000 range instead of 1300? Also, at 110 FPS in-game, you shouldn't be seeing ANY jitteriness, since the human eye can only view the world at 30 FPS roughly -- unless you're saying the frames are dropping more on the stream...?

Can you also tell us what your upload speed is? You can figure it out at places like speedtest.com.

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On August 02 2012 06:13 Nevermore214 wrote:
1.5 mbps? Yeah, you need to lower it (the bitrate) down more, I think. Especially if you share your connection with at least one other person where you live/work/use your computer. You may also want to set your quality as well.

Something that I've noticed when I use XSplit to display SC2 directly is that it will lower my FPS as well. Sometimes this won't happen, sometimes it will, but a work-around I've seen is to use Screen Region instead of SC2, and when I alt-tab when streaming I just hit a Scene hotkey to put up a splash. Have you tried that?

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On August 02 2012 06:10 Whitewing wrote:
Are you running the game in full screen or windowed mode?

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On August 02 2012 06:46 Cyro wrote:
Changing bitrate wont do a thing for video performance and "quality" is just a simpler way of using CRF, which changes encoding quality but again shouldnt affect CPU usage or video performance

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On August 02 2012 06:57 Medrea wrote:
Values look good. Don't see a problem.

Xsplit causes stuttering. Thats what it does. Your using the same processor for two things at the same time, one of them only uses 2 cores.

GPU usage is capped because neither SC2 or Xsplit are very GPU demanding.

CPU usage looks fine because SC2 only uses 2 of your theoretical 8 cores, so thats 25 percent max. The other 35 looks fine to me as well because Xsplit caps out at 4 cores until dimishing returns per core.

What you can try to do is force SC2 to use only 2 physical cores. Giving Xsplit the other 2 physical cores and all 4 non physical logical cores.

If you are the sensitive type. You'll never really get it smooth. If you want a smooth streaming experience, you will need to do what tournaments do, which is to procure a capture card, or stream to a second computer over LAN (typically with VLC) which then handles the encoding for you.

You can also make sure you are using game source, as that gives you the best bet in the fight against stutter.

Otherwise, you may have to make sacrifices. I have a similar setup and I start to get a smooth experience if I reduce my stream FPS to about 2. Sometimes up to 5 FPS. Neither are really acceptable to viewers of course.

Once again, if you arent sensitive, its possible to get a streaming experience thats good enough (non sensitive people always use that term "good enough" to explain problems to other people).

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On August 02 2012 10:45 Cyro wrote:
Using an i7 950 @3.84ghz (HT off atm) and a gtx580 at the start of this cloud kingdom replay (paused, ladder version) i get 310fps, with xsplit capturing at 30fps i get ~265, with xsplit capturing at 60fps i get ~215. Mostly low settings, maxed textures, effects, models on high, some variables.txt stuff, but i can encode at 1280x720@60fps at any quality/bitrate i want and hold over 200fps at the start of the game, of course dropping over time etc, but it feels pretty smooth to me. I am really sensitive to latency/stuttering etc but it doesnt run too badly. Performance issues seem to vary a lot between systems

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On August 02 2012 10:46 coL.Minigun wrote:


ugh now I'm being taunted :s

that's exactly what I want.

Why can't I have nice things?

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On August 02 2012 06:57 Medrea wrote:
Values look good. Don't see a problem.

Xsplit causes stuttering. Thats what it does. Your using the same processor for two things at the same time, one of them only uses 2 cores.

GPU usage is capped because neither SC2 or Xsplit are very GPU demanding.

CPU usage looks fine because SC2 only uses 2 of your theoretical 8 cores, so thats 25 percent max. The other 35 looks fine to me as well because Xsplit caps out at 4 cores until dimishing returns per core.

What you can try to do is force SC2 to use only 2 physical cores. Giving Xsplit the other 2 physical cores and all 4 non physical logical cores.

If you are the sensitive type. You'll never really get it smooth. If you want a smooth streaming experience, you will need to do what tournaments do, which is to procure a capture card, or stream to a second computer over LAN (typically with VLC) which then handles the encoding for you.

You can also make sure you are using game source, as that gives you the best bet in the fight against stutter.

Otherwise, you may have to make sacrifices. I have a similar setup and I start to get a smooth experience if I reduce my stream FPS to about 2. Sometimes up to 5 FPS. Neither are really acceptable to viewers of course.

Once again, if you arent sensitive, its possible to get a streaming experience thats good enough (non sensitive people always use that term "good enough" to explain problems to other people).

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On August 02 2012 10:51 Infernal_dream wrote:


How do you stream to a second computer over LAN to allow that computer to do the encoding? Any links or anything? Didn't even know it was possible but since I have a laptop right next to me 99% of the time sounds like something I should try.

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