Question / Help Laggy streams

Hi, i am a streamer. My stream worked really good on Windows 7. Then i decided to Upgrade my computer to Windows 10, and then my stream got laggy. Then i found out that my processor was outdated and i thought that that was it, but its still laggy. Please respond, i need help

Btw i have the same settings as i had on Windows 7.

This is the message i got
Bad Video output low
YouTube is not receiving enough video to maintain smooth streaming. As such, viewers will experience buffering.
 
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