Question Crazy input lag when display is mirrored?

Apr 24, 2020
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So i am trying to set up my stream setup and i have to mirror my display to send it through the elgato in the stream pc and it works but when i get in game there is a very unplayable input lag, is there a way to fix this? i used to have my main display from the elgato but now i have a new monitor so i want the full 144hz and in order to get that i had to mirror the display to the elgato for streaming, pls helpppp
 

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