Download Bootcamp Drivers for Win10 in Win10

I have completely wiped off MacOSX and all Mac related partitions of my iMac Pro.

- Deleted OSXRESERVED Partition with Bootcamp drivers.

- Now i need to re-install the Win10 Vega56 display driver.

- Apparently this only works via Bootcamp and not via Windows Update or the official AMD Software.

- Searched Apple Downloads, last Bootcamp version there is from 2015. Nothing from 2017/2018.

I dont want to format the whole machine and install this pain in *** MacOs only to install Win10 from there again.

I only bought the iMac pro cause i can run Windows on it.

tl;dr: Where can i download MANUALLY iMac Pro Win10 driver package?

Please assist, Thanks!