OBS causes stutter in my games when set to game or window capture, but not when using display capture

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dancho_razboinika

New Member
I've got a suspicion that it's something to do with refresh rates and framerates, but I may be completely wrong. My monitor refresh rate is 60hz and I run my games with Vsync enabled, and when I get stutters from OBS the FPS counters still show a steady 60. It doesn't matter if I'm recording, streaming or just have OBS open in the background, as long as it's set to capture just a window, there is stutter. I would like to find a way to capture just the game and not have stutter, so that I'm able to alt-tab while streaming to check stuff without sharing them.

log file with display capture: https://obsproject.com/logs/fYZBKym3TII4Sefj

log file with game capture: https://obsproject.com/logs/7SDaCBpqlHa9xNlb
 
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rockbottom

Active Member
Remove one of them from the Scene & test again. They could be interfering with each other.

21:45:12.202: - scene 'Scene':
21:45:12.202: - source: 'MC2' (game_capture)
21:45:12.202: - source: 'Display Capture' (monitor_capture)
 
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dancho_razboinika

New Member
rockbottom said:
Remove one of them from the Scene & test again. They could be interfering with each other.

21:45:12.202: - scene 'Scene':
21:45:12.202: - source: 'MC2' (game_capture)
21:45:12.202: - source: 'Display Capture' (monitor_capture)
Click to expand...
I had not realized that all the sources in a scene are active, even when they are hidden. Getting rid of the Display capture source didn't fix the stutter, unfortunately.

I made the same post on the OBS subreddit and someone there suggested that I disable the game's Vsync, and that got rid of the stutter. Problem solved, I guess.
 
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rockbottom

Active Member
Yeah, always active. Window capture too, only (1) per Scene just like the others.

Failure from your Game Capture log. See if you're still getting it.
21:52:31.970: gs_texture_open_shared (D3D11): Failed to open shared 2D texture (80070057)

Is the game running on the 1650 TI or the iGPU? See below.

Question / Help - "Failed to open shared 2D texture"

I've ran OBS on other games, just to clear that. This only (from what games are accessible to me at the current time) an issue with Minecraft. I've looked it up multiple times to see if anyone has the same issues as me. To be honest, I have little hopes for my self, and probably gonna call...
obsproject.com obsproject.com
 
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dancho_razboinika

New Member
This is just a game I used to test if the stutter isn't game specific and I don't intend on recording / streaming it, so it doesn't matter.

I made a test recording with the game I intend on streaming. Can you have a look at the log, please?

With Vsync disabled in game the game runs smoothly, but the log shows 0.1% rendering and encoding lag.
 
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rockbottom

Active Member
Rendering lag is GPU overload. Some load reduction is needed. Reduce the game quality or cap frame rates. V-sync adds a bit of a frame cap so with it enabled there was no lag previously. Don't worry about the encoding lag, it will go away when the rendering lag is eliminated.

Encoding Performance Troubleshooting | OBS

OBS Knowledge Base. Learn best practices to solve encoding performance issues
obsproject.com obsproject.com
 
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dancho_razboinika

New Member
rockbottom said:
Rendering lag is GPU overload. Some load reduction is needed. Reduce the game quality or cap frame rates. V-sync adds a bit of a frame cap so with it enabled there was no lag previously. Don't worry about the encoding lag, it will go away when the rendering lag is eliminated.

Encoding Performance Troubleshooting | OBS

OBS Knowledge Base. Learn best practices to solve encoding performance issues
obsproject.com obsproject.com
Click to expand...
Capping the frame rate got rid of the GPU overload, but the game went back to stuttering.
 
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rockbottom

Active Member
You'll need to test. I don't cap anything & only use v-sync, never have rendering lag.
1740871092211.png
 
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rockbottom

Active Member
Cool! You only needed a slight load reduction so the cap didn't need to be so drastic. Let the GPU render as many frames as possible. When you get some lag, adjust accordingly.
 
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rockbottom

Active Member
Last suggestion(s), for your recordings, zero B Frames (Lowest quality frame type) & disable Lookahead & Visual Tuning. I think you see a difference.

01:17:46.966: b-frames: 2
01:17:46.966: b-ref-mode: 0
01:17:46.966: lookahead: true (8 frames)
01:17:46.966: aq: true
 
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