Multi Screen Sync Problem?

Hi, I have a problem with retroarch, my PC has a GeForce gtx 970, with two out ports 1 HDMI and 1 DVI. When i switch to TV (using hdmi or dvi, is the same), i have like 1, 1.5 fps drop every 4-5 seconds. If i disconect the PC Monitor, and use only 1 port with the TV, it runs perfect, PERFECT!. I’ve tried switching Video Controller to Vulkan, D3D, etc… but nothing fix it. Tried PErfect Syng, no Vsync, no Vsync on Retroarch but Vsync enabled on Nvidia panel… I don’t know what more to try. I’d like to play without having to disconnect the hdmi cable from the monitor everytime (it’s very uncomfortable, it’s sticked to the wall) Any idea what could fix this? Thanks!

Usually, setting the monitor where you want to play as the primary monitor should fix it.

thas how already is, just watched now on windows monitor properties, this, the PC monitor, is marked as “2”