dual monitor problem. plz help!

[willalele]

I have problem with my new pc when im trying to use 2 monitors. on my old pc i could use 2 monitors and have discord, steam, stream on the second and i could still play games on my main. But on this new, as fast as i drag something over i feel laggy on my main like the hz drops from 144 or something else. I dont know where the problem comes from.

 

[Ralston18]

Update your post to include full hardware specs and OS.

What make and model monitors are you using?

What video connections are you using between new pc and monitors?