If you have to continue to work on the texture with substance painter it would be clever to bake the normal map using Allegorithmic bakers instead of zTexturer and using the tools available to create a substance painter project from Zbrush directly.
NOTE: This driver is not intended for use on AMD Radeon products running in Apple Boot Camp platforms. Users of these platforms should contact their system manufacturer for driver support. When installing AMD Software: Adrenalin Edition 22.4.1 for the Windows operating system, the user must be logged on as Administrator, or have Administrator rights to complete the installation of AMD Software: Adrenalin Edition 22.4.1. 781b155fdc