Question / Help Random Choppiness on Stream

Funkays

New Member
Hey there, just made my account to post this issue I am having:

It seems when I stream Rainbowsix: Siege everything runs fairly smooth. However at times I will get a huge bout of stream chop during Killcams (usually during end-of-round killcams). Otherwise my stream runs perfectly fine. I can play the game and stream it smoothly, regardless of how fast I move the camera. But with end-of-round kill cams my stream drops to what looks to be <10fps for 3-5 seconds then snaps back once the stream feed reaches the next in-game round.

I am new to streaming and OBS. I am slowly reading different guides and trying to learn what I can about tailoring my OBS to my machine so i hope by asking here about my issue I am not angering anybody. I have generated a log file and will link it below. I just did a test stream for 40 minutes to generate this file. Unfortunately the issue (massive stream fps drop) only occurred once- perhaps 10-20 minutes into the stream. I have checked my OBS client and it claims "zero dropped frames," as well as CPU usage is said to under 10% and my bitrate never drops too far below the set amount (usually 3000 but I do sometimes tweak it down to 2800 to try to fix the issue. Idk if it is fixing the issue).

I am not sure what these logs provide in terms of settings so i'll just blurb down my OBS and PC specs:
PC
Intel i7 920 @4.0Ghz
AMD HD 7970
12Gb DDR3 Ram

OBS Settings

STREAM:
Service = Twitch
Server = US West: Seattle, WA (as I am currently located in British Columbia, Canada)

OUTPUT:
Video Bitrate = 2600 - 3000 (Usually start at 3000 but lower if I am encountering issues, plus the whole "let people with bad internet view the stream)
Encoder = Hardware (AMD)
Audio Bitrate = 160 (Default)

VIDEO:
My resolution = 1920 x 1080
Down-scaled = 1280 x 720
Downscale Filter = Lanczos (Sharpened scaling, 32 samples) (Switched to this from the default after reading something on a thread somewhere, I don't remember the reason though)
Common FPS Values = 60

I read somewhere OBS reporting zero frame drop, yet experiencing stream stutter can be due to in-game FPS not being capped/matched to the 60 fps OBS attempts to render at. I capped my in-game fps and the issue seemed to disappear, but it has since come back so i guess it wasn't the solution/explanation.

Here is my test log generated by OBS:
Edit: Just checked all Logs in OBS and apparently it has 2? Even though I only did 1 instance of streaming. Looking at the times it seems one comes right after the other. I dont really understand so I've linked both. If they are no good I will upload a fresh log after my streaming session tomorrow night (was hoping to test tonight, get solution on here by morning and have a fixed stream tomorrow lol).

https://gist.github.com/anonymous/88ade50d4d950b7492d055a3a64aca2d
https://gist.github.com/2aed9e381795742c92590787d66db36d

Thank you in advance to anyone who can assist me in the issue; and if you are able to glean any further knowledge on how I should change my OBS settings for an overall better quality stream please feel free to let me know!
 

Funkays

New Member
After tonight's stream I am wondering if it has to do with CPU usage. Here is a log from said stream:

https://gist.github.com/anonymous/10d2b7c1c96c7ea87416b19d04aa8dd2

I had RealTemps open and noticed my CPU usage go from 60/70 to sometimes 90 during the aforementioned in-game killcams. This sometimes resulted in the frame skipping I experience on stream.

I read FPS games should be streamed with 60fps/3000-3500 bitrate in order to run smoothly. Did not help; ended up dropping back down to 2800-3000.
 
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