Bug Report Dual Xeon / Dual Titan X - Can't stream

[rhino_punch]

No clue what's to blame for this issue but the "frames missed due to rendering lag" is upwards of 35-40%. Critical points are:

No matter what settings I change (bitrate, down-res, sampling, encoding, etc) the Frames missed stays perpetually high. I have noticed that CPU cores 1-4 are pegged whenever OBS tries running with a game. All background tasks/processes are either not running or using next to nothing on CPU resources. I've set OBS to the shittiest of settings (10FPS, video scaled next to nothing) and barely can output/stream video.

This is the only setting I've been able to run where render frame times are within 33ms:
- Encoder NVENC or x264 doesn't really matter when tested
- Output (Scaled) Resolution 852x480
- 10 FPS
- Video bitrate 500

System Specs:
- Dual 10-core (40 total threads) Xeon 2.1 GHz
- Dual Titan X GPUs (non SLI)
- 64 GB DDR3 1800

Log:
https://gist.github.com/52e39d487788ec12f2cc6f274cc6c7e6

 

[Harold]

post a screenshot of gpu-z

 

[Suslik V]

I think of harness to ride this horse...

 

[rhino_punch]

 

[rhino_punch]

 

[Suslik V]

The display device at the center - 240Hz, G-Sync? If so, try to leave single card in your PC (use x16 slot), connect 1 display at 60 Hz, disable G-SYNC, and use this steps to record test video: Game capture not working (under the spoiler). When done, playback the recorded video. Is the render still lagged?

 

[rhino_punch]

The main display is a Dell 30" U2711 and does not have GSync.

I've noticed that OBS starts dropping frames whenever a gaming application has focus. While sitting on just the Windows Desktop, OBS runs just fine. It's whenever a 3D Application takes focus that it starts dropping frames/lagging left and right.