The short anwer: ID and all the other Adobe apps work just fine on ultrawide monitors, at least under Win11. I was even able to repurpose my 27" 4K as a secondary screen above the big guy.
It's worth noting that everything works fine using a fairly modest older video card/GPU as well. While anyone considering a 5K/ultrawide should make sure their card can handle the screen dimension (mostly the 5100+ pixel width), don't believe the claims that only the latest and most muscular cards can handle it. (And yes, I do play games on the new monitor as well; no problems other than dialing down some of the extreme settings.)
This is a huge — literally — improvement over a three-monitor setup. Worth considering for publishing/graphics and especially ID/video productivity.
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