eGPU - NVIDIA Geforce GTX1060 on 2015 MacBook Pro Retina 13" under Arch Linux with primusrun

My eGPU setup with a NVIDIA Geforce GTX1060 on 2015 MacBook Pro Retina 13". It works mostly flawless under Arch Linux with primusrun, most recent closed-source Linux NVIDIA graphics card drivers and boot kernel parameters "pci=nocrs,realloc", for to break through the by-Apple-ACPI-DSDT-predefined 32-bit PCI-express virtual address space room limit. But with Windows it's mostly a no-go, because I've with Windows and the eGPU setup a boot success chance only of circa 5%, in the remaining 95% of the tries the Windows boot process hangs at a infinite boot spinning wheel animation. And the other issues with Windows and this eGPU setup are (when the Windows boot process with the eGPU was successful, but which is very rarely the case): 1. Only Direct3D and Vulkan stuff works with the external GTX1060, but OpenGL not, so OpenGL stuff runs then still on the Intel Iris Pro 6100 iGPU. 2. No Optimus (at least in the moment with the 372.70 driver version), so a external display on the GTX1060 is needed here under Windows 3. Maximal working NVIDIA driver version 372 .70