1. It effects all board and definitely Gigabyte which is Tony's recommended board manufacturer and has been for years.
2. Drawbacks are that the Current Mac OS kernel does not support Kaby Lake and modifications must be made to Clover manually to get the F2x bioses to work.
3. These version F2X bios updates are not beta they do not state beta!!
4. I do not have the testicular fortitude to flash and I have done so many flashes in my life they must number in the hundreds as I have built more than hundred machines for myself an others I am an expert in flashing but you cannot go back once either if the FX seris of bioses are installed.
I am writing this on a Gigabyte Z170MX Gaming 5 using two SSDs one Intel M.2 for Mac side which is 10.12.4 with latest Clover and Window 10 Enterprise 64 Creators edition version 1703 15063.168. of which the majority of my work (my job as an engineer) must be done on the PC side.
My point is this problem will affect everyone until the or a newer bios is installed properly that addresses this problem.
ONLY F5e is listed as Beta.....