Is there a Thunderbolt 3 dock available for this monitor that allows 120hz (4k) via TB3? I keep coming back to the CalDigit TS3 Plus in my search, but even there it "only" says 60hz for 4k.
This only works via Displayport 1.4. Your end device would have to have a corresponding port. Otherwise, as far as I know, it only works with an external graphics card.