Question / Help O Great Log File Readers - Oracles of the Logs - Answer my Query!

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LosingIt

New Member
Before, my game recordings were buttery smooth, but now, I'm getting slight stutter or a kind of lag, not while playing the games - but it shows up in the recorded footage afterwards.

I'm recording in 1080p/60fps (downscaling from 1440), using a 1080ti, and an Elgato HD60 Pro, my CPU is an i7 8700k.
Surely there should be no stutter?

Thought it was the HDD bottlenecking at 5400rpm - but the issue occurs on both that and a 7200rpm one i tried, so ruled that out.
Thought it was the Nvidia driver, which I updated, still getting this slight stutter/lag.
Thought it was the obs version- installed the new obs. (discovered the NEW Nvenc h264 encoder - yay, but it didn't change a damn thing)
I'm now thinking maybe do a clean install of my GPU driver, and failing that, a full windows reinstall.

I know elgato isn't properly connected through hdmi, but this is a Steam game I'm playing, so I'm hoping OBS isn't trying to use elgato here.
I'm also aware the audio is broke, it's not my main concern here, I can fix it later but if you'd like to have a go at that too, feel free.
I recorded a short clip in which the stutters occur. Here's the log file:

https://obsproject.com/logs/2f-2ZMj0Gxcs7rDX

Thanks and Godspeed
 
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Well, your logfile doesn't show any render delay or encoding lag on the recording. You *do* appear to be using Full color range (and should not be, Partial is the default for a reason; using Full range requires a number of other considerations and a full RGB production pipeline) but that shouldn't be causing a frame-stutter issue as far as I know.

You do appear to be using CBR to record 1080p60 with only 4000kbps allocated, which could absolutely be causing a problem. Swap to CQP/CRF with a quality rating between 16-22. CBR is only needed for streaming, and should not be used for local recordings where network throughput is not a consideration.
I would also recommend deleting (not disabling) the Display Capture source, and try with a Game or Window Capture source instead... Display Cap is the least-performant capture method, and can cause issues even on its own; it should only ever be used as an absolute last resort. Just having a DC in the same scene as a Game or Window capture can cause render delay/encoding lag (which you don't have); I'm not sure if Video Capture Device sources also have an issue with it.
 
Thanks for your reply Ferret, much appreciated!

I changed to partial color range, and set the rate control to CQP at 20 (it's better to use Nvidia's encoder right?) , deleted display capture and tested some recordings with Window Capture.

Unfortunately I'm still getting a frame stutter :(

Not sure what else could be causing this issue.
 
When using quality-based encoding, it doesn't matter as much which one you use, but NVENC will help keep the load off your CPU, so yep!

Post a logfile from the new recording attempts and we can take a look. :)
 
Hmm. The logfile isn't showing anything particularly problematic. Your monitor's refresh being at 59hz and recording being at 60, which might cause a tiny judder, but that's grasping at straws.
To be clear, what are you using to play back the recordings? If you're using the default Windows media player, "Films and TV", try downloading VLC instead and watching your videos back with that. FaTV is known to be not-great in general, and can have a ton of playback issues including bad frame pacing, and missing audio/video among others.
 
Thanks again, it seems there's only straws left!

Weird that my monitor shows up as 59hz, I checked the monitor itself and it says its at 60. Other than that, I do use VLC. To be sure, I played the files through MPC-HC and they still had stutter.

If anyone knows what my options are at this point I'd love to hear - I'm pulling my hair out!
 
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