Why my fps drop when I record with OBS?

ProPlayerGR · Oct 13, 2017

Hey guys. I'm having some issues while trying to record my gameplay with obs. My frames without recording are average 75 but when I press "start recording" they drop down to 50-55. Could anyone explain why is this happening? Also can someone tell me what would be the best settings for my system? Thanks in advance.
PC SPECS:
CPU: AMD FX 9370 4.4GHZ
GPU: INVIDIA ASUS GEFORCE GTX 1070 FOUNDERS EDITION
PSU: EVGA SUPERNOVA 850W G2
CPU COOLER: CORSAIR H100I V2
SSD: SANDISK ULTRA II 240GB
HDD: WD 2TB
CASE: CORSAIR OBSIDIAN 750D AIRFLOW EDITION
MOBO: ASROCK 990FX EXTREME9
RAM: CORSAIR VENGEANCE 16GB PRO 2x8GB DDR3

NerdyComputerGuy · Oct 13, 2017

This is happening because recording uses CPU power, so you lose some FPS.

You change change your encoding preset to NVENC to stop the FPS loss (will use onboard video enconder on your 1070 GPU) - follow this guide to do that.

http://www.natesnowstorm.com/2016/01/06/how-to-setup-your-twitch-broadcast-with-obs-using-nvenc-with-screenshots/

drkatz42 · Oct 13, 2017

"OBS Studio requires the following hardware and operating systems to function. Having a compatible system does not guarantee that it is capable of streaming or recording using OBS. The CPU requirements vary considerably depending on the chosen encoder, resolution, FPS and your scene complexity. Try the Tools -> Auto Configuration Wizard in OBS itself to find appropriate settings for your specs."
https://obsproject.com/wiki/System-Requirements

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Why my fps drop when I record with OBS?

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