Apple recommends displays? Ever since they discontinued their own display, I've had a dickens of a time using third party displays. My current display flickers for 30-60 seconds before becoming usable on wake, and I would love to night shift again. Where's the list?

Here is the list:

1. LG UltraFine monitors

THE END

Sadly, recommendation notwithstanding, I bought 2 of these 5K monitors for my iMac Pro, but they have the same funky waking problems you describe, and sometimes one doesn't even come on at all, until the machine is rebooted. T_T

(Night Shift does work on them, though. But auto-brightness doesn't, so it's like a soft orange-ish screen in the middle and two BRIGHT AND FIERY ORANGE SCREENS blazing at you at night, unless you manually adjust the brightness...)