Question / Help OBS Using 90% CPU on Idle

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Noah Marsh

New Member
Alright let me give you the rundown of my setup first as this should be of no problem.
I'm running a two pc stream set up.
Gaming PC:
CPU: Intel i7 4820k overclocked to 4.3 ghz
GPU: Radeon R9 390X 8 GB gddr5
RAM: 16gb GSkill Sniper Series
CPU Cooler: Cooler master v8 GTS (2 of them)
Motherboard: MSI Military Class
Power Supply: Cooler Master v1000 watt 80+ Gold
Hard Drive: 1TB
Streaming PC:
CPU: Intel i3-8100
No GPU, since im using CPU for encoding
Motherboard: ASRock Z370M Pro4
Ram: 8gb DDR4
HD: 1 TB
PSU: Corsair 500 watt

I'm using a Elgato HD60 to capture gameplay from my gaming PC to the streaming PC. My problem is once I open up OBS its at 90% CPU Usage which should not be happening. Once I attach my video capture for the elgato the fps drops down to 20 or lower. By my understanding the mitigating of the gaming pc to streaming pc would call for low requirements for high end streaming. So why would OBS be giving me this issue? Could it be the capture card? Any help would be phenomenal!
 
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SumDim

Member
You are trying to push out 1080p at 60FPS with an i3 I think thats part of the problem - you need a stronger CPU. Scale down from 1080p base to 720p instead and see what the CPU usage is.

Also, your streaming PC should be at least as much CPU power as the gaming PC.

50% OBS CPU usage on a i7 is not going to be 50% OBS CPU usage on a slower i3.
 
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SumDim

Member
Eliminate the GPU issue entirely by going out and getting a low end Nvidia GPU card like a GTX 1030.
Replace the i3 with a more powerful socket 1151 CPU that works with your ASrock with as much cores and threads you can afford. An i3 is not going to produce good quality output for now and in the future.

You went into this dual PC setup to free up the CPU usage on your gaming PC to offload it to a secondary PC in hopes that you can achieve better quality.
If you want better quality, you can't expect buying cheap low end hardware to do that. It doessn't work that way.
 
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