As with the dock that I had previously on the EliteBook from 2018, the connected monitors will turn to black for a few seconds every once in a while. With my old dock, this was eventually fixed with a patch, but it was frustrating that it didn't work out of the box. The new dock has the same issue, which is remarkable to say the least.
Absolutely horrible and frustrating! Advertised as being able to handle 4 separate 4k monitors, but it will only do high resolution on one. I spent hours with my firm's IT department trying to get the resolution to match on 2 HP Z27 monitors and it will not work.
Used with an Omen 17. It had several weird issues initially, particularly with USB. They were resolved with a firmware update. There is no automatic update, you must find/download/install them manually. That should be automatic with a new device! After that, however, it has been great. I am not (yet) stressing it with more than one 4K display, but expect to soon. I guess I will need to manually check for updates in the future too since it isn't automatic.