elgato hd 60 pro

I got a brand new HD60 Pro today and wanted to get it all setup for the Switch. Cables are in the right outputs, all drivers installed but the "no signal" message still persists to show. I have disabled and reenabled via device manager, uninstalled and reinstalled all drivers multiple times but...

I am using Acer VG27IU 1440p 144hz monitor and want to clone it to Elgato HD60pro. I have succeded to do so but as soon as I boot a any game both the display gets back to 1080p in game and there is no option for 1440p but I still have desktop runing at 1440 144hz. I am using display port cable...