Against my principles I tried upgrading my macOS 10.12.6 to 10.13.1 - after not having heard too many concerns.
It took quite a while until finished but then everything seemed to be fine so far.. Until I wanted to calibrate my BenQ SW320 using Palette Master Element 1.2.5 (latest release).
Whether I tested the i1 Pro or the i1Display Pro, the process took ages (up to 15 minutes) - and up to 3 minutes for each one of the dark grey patches.
The result was not acceptable, which could not only be seen in numbers (mainly problems in the grey axis) but directly on the screen.
So: I really hope that there will be an imrovement on the BenQ software rather soon.
Will keep you posted when there is a solution available.
Btw: the good news: I was able to use Color Navigator on the Eizo CG 303 without any problems - with both devices and 10.13.1.