Mercury Transmit not working after switch to 4k monitor

[LongHaulTom]

Hey

I have a 3 monitor setup which I've been successfully using with monitor 3 enabled for Mercury Transmit, with full screen preview.

Then I upgraded monitor 2 to a UHD resolution monitor and now Mercury Transmit won't work properly - enabling it for monitor 3 puts the preview on monitor 2, much smaller than full screen. Likewise enabling it for monitor 1.

I have the text size on my UHD monitor set to 150%, but even when I set that back to 100% it doesn't solve the Mercury Transmit issue, and also makes it really hard to see any text.

So bummed that this is like this... almost considering moving back to my old monitor.

[LongHaulTom]

Bueller.... Bueller....

[SamDogDigital]

Is your display card capable of 4K output? I have an older Nvidia Quadro 5000 card and max rez is 1920X1080.

[Jim_Simon]

One thing I could recommend is to not use the GPU for full screen playback.  Instead, use a proper I/O device from AJA, Blackmagic, etc.

[eyeDfy]

I also have a 3-monitor setup running GTX 2080ti. My main middle monitor is now a 4k with two 2k on either side. My preview being on the right (see pic). Nvidia drivers are up to date

Mercury will run fine for about 5-ish minutes then the preview monitor image will freeze. When I toggle Mercury on/off it refreshes to a  black screen. When I toggle on/off again it comes back with the original static image. I have to exit and re-start AE. It then works fine for 5-ish minutes, etc., etc.