@ all:
Update of the Start Post
Changelog:
- new: “pure” 32/64bit ASMedia USB 3.0/3.1 Drivers v1.16.50.1 WHQL incl DPInst dated 10/11/2017
A complete Drivers & Software Set v1.16.50.1 is not yet available.
Thanks to Station-Drivers for the source package!
I have just installed the “pure” 64bit ASMedia USB 3.1 drivers onto my Z170 system running Win10 v1709 by using the DPInst method and everything works fine here.
Here is a picture with the new Device Manager entries and the driver details:

Good luck with these new USB 3.0/3.1 drivers!
Dieter (alias Fernando)