We have found that, since our beginning this forum in 2010, that the Gigabyte motherboards, followed by the ASUS motherboards, are the easiest to get macOS installed and running successfully. However, other motherboard companies have made strides to update their designs to be compatible with more OSs. Looks like your MSI Z270 KRAIT GAMING PLUS motherboard is compatible due to the Ethernet and Audio chipsets which have drivers in MultiBeast.
I've got the MSI Z170A Krait Gaming(doesn't say M5 or M7)
@shakakoa what was your Unibeast setup to be able to install El-Capitan?
I've used the Asus thread and it crashes about 2/3 of the way to booting El-Capitan install