Ryzen 9 5900X X264 encoding

[Duxcro]

I bought this CPU for X264 encoding and gaming. I don't have a dedicated streaming PC. I was playing Mortal Shell which is a very light game on CPU and i was monitoring all 24 threads usage in game with riva tunes statistics server overlay. I see that OBS uses around 15-20% of this CPU when i choose slow X264 encoder with this game. And game + encoding goes between 25-30% total CPU usage.
However i see that some threads are bearely used. Almost no usage. So how many threads for encoding can OBS really use? Because even with low CPU usage i still get some stutter in my stream. With new NVENC i don't get that lag. Weird, because 5900X should handle slow without issues. Especially if it uses only up to 20% total CPU usage for encoding. I stream @ 720P 60fps.

 

[Yasaka]

if your gpu is at 100% because of the game you might want to try out running obs in admin mode. i also have a ryzen 5900x and tried to stream 1080@60 with medium preset which works pretty well even on cpu intensive games. however on the cpu intensive games i have lower framerates and low framerate spikes (ingame, stream is fine) even the cpu is only at 70%. i think i switch back to gpu streaming because there is nearly no impact on the game performance.

 

[lowzyyy]

I bought this CPU for X264 encoding and gaming. I don't have a dedicated streaming PC. I was playing Mortal Shell which is a very light game on CPU and i was monitoring all 24 threads usage in game with riva tunes statistics server overlay. I see that OBS uses around 15-20% of this CPU when i choose slow X264 encoder with this game. And game + encoding goes between 25-30% total CPU usage.
However i see that some threads are bearely used. Almost no usage. So how many threads for encoding can OBS really use? Because even with low CPU usage i still get some stutter in my stream. With new NVENC i don't get that lag. Weird, because 5900X should handle slow without issues. Especially if it uses only up to 20% total CPU usage for encoding. I stream @ 720P 60fps.

Did you find solution for this? I stream 1080p 60fps Call of Duty 2 on 9000kbps and have this stuttering. Cod2 use only 1 thread so CPU should encode slower easly...