Good PC and connection suddently slow entire system from 60FPS to 10FPS during stream

[frdonn]

Hello team,

I have an issue that makes my PC very slow (Game, OBS Studio, Windows) after couple of minutes of stream on 1080p60 6000kps (I've use Wizard and ticked Enhanced Broadcasting). The issue comes later on 720p30.

Microsoft Windows monitoring doesn't show over usage of CPU and GPU. Temp are very fine(CPU 32°C / GPU 50°C). I formated my PC, did a clean install of Windows, uninstall/install OBS Studio last version, uninstall/install Street Fighter 6 video game. Nvidia driver and Windows are up to date.

I faces the same issue after trying different configurations (decreased from 60 to 30FPS, decreased from 1080p to 720p, decreased from 6000kbps to 1500kbps).
The difference is:
- with 1080p60 the issue comes very fast (after 20minutes of stream on Twitch)
- with 720p30 the issue comes later (after 3h07min of stream on Twitch).

Many thanks for your help!

Attached files (logs and screenshot)

My HW configuration:
09:40:46.636: CPU Name: 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz
09:40:46.636: CPU Speed: 3600MHz
09:40:46.636: Physical Cores: 8, Logical Cores: 16
09:40:46.636: Physical Memory: 32596MB Total, 21176MB Free
09:40:47.067: Adapter 0: NVIDIA GeForce RTX 3070

My Internet connexion:
Upload 2Gbps
Download 800Mbps

 

[frdonn]

On log I can see those messages. Maybe some hints.
09:51:47.899: P010 texture support not available
09:58:17.352: warning: deprecated pixel format used, make sure you did set range correctly

 

[koala]

The log indicates general GPU overload. Try deactivating Twitch enhanced broadcasting, since it increases GPU resource demand. It could also help if you clean up and simplify your scene and source setup, for example reducing the amount of scenes and removing capture sources you don't show.
Reduce/cap the fps of the game you capture. Activate vsync. For troubleshooting, reduce everything to 60 fps and see if the issue persists.