HDMI Switch give green dots

[chonnytok]

I'm hooking my ps4 and my PC up into a HDMI switch into my Monitor.
But now when I have my PC on display. It shows alot of green dots 10+

is there a way to get rid of this?

or do you guys know a better HDMI switch that will not cause this?

Monitor 2560x1440 144hz

 

[Lutfij]

1| Make and model of your display?
2| Make and model of your switch? Or were you referring to an HDMI port on the display?
3| How are you connected from the console/PC to the monitor? Have you tried changing out the cables?
4| You could try and rule out a faulty HDMI switch by individually connecting to the monitor.
5| You might want to share your PC's GPU make and model for us to understand the outputs it has.