I am having a similar issue with a new display build (Win10, WX8100, HP Z440)
I went through the tweak list on build and have the display machine working with two outputs just fine. After setting up a third output to the same settings as output 1 and 2 (1080P, 60hz) all three displays blink and never show the IP screen.
Display changing frequency - newly built display servers
in WATCHOUT FORUM
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I am having a similar issue with a new display build (Win10, WX8100, HP Z440)
I went through the tweak list on build and have the display machine working with two outputs just fine. After setting up a third output to the same settings as output 1 and 2 (1080P, 60hz) all three displays blink and never show the IP screen.