144 hz Screens run at lower refresh rate when 60 hz screen is connected

General system Newbie
1

I have a setup with 2 x 144 hz Screens. But i would like to use a 3. screen which supports only 60 hz.
When i connect and enable it in the display settings i visually see that the refresh rate of the 2 x 144 hz screens is reduced. I see it specially when i move windows.

Only when i connect the 60 hz screen the 144 hz screens stop running at 144 hz.
But the settings display 144 hz
I already had this on windows and read that this was a windows problem :stuck_out_tongue:
I got a RX 5700X GPU. The displays are connected via dp and hdmi.

Anyone got an idea on this issue?

2

Get another 144 hz monitor?

3

Switch to wayland if your DE supports it. You can also configure your 60 Hz monitor as a seperate screen but this way you won’t be able to move windows between 60 Hz and any 144 Hz monitors.

4

Do your screens have a GSync/FreeSync feature?
If so try to disable it in the monitor settings to see if it’s better.