Performance degradation when second screen attached

[GarfyTheCat]

Hi all. New here.

 

So I recently added a new 144hz screen to my gaming pc replacing an old 60hz that just wasn't cutting it. Now I find I can't run two screens without some kind of performance hit. Everything runs fine and the numbers all appear ok, i.e. the frame rate in games, but there is a lot of stuttering like the pc is struggling to keep up. When I disconnect a second screen and just run the 144hz it runs smooth as silk and I have no issues.

 

I'm currently running a Ryzen 5 2600X, 16GB RAM, GeForce 1060 6GB, AB350 Gaming motherboard, and my main screen is an Acer XF240H.

 

I've tried running a second graphics card, different RAM, and a bunch of different screens with no luck. Any suggestions to improve this?

 

[Akira Shimazu]

your VGA only capapble of using one sinlge HZ. so if the lowest screen which is 60HZ it will capped at 60