GIGABYTE GA-Z270N-WIFI need help with WiFi, audio, and Intel HD Graphics i5 7500

I have my installation up and running on 10.12.6 Sierra. Gagabyte GA-Z270N-WIFI and an Intel i5 7500. To boot up, I need to change FakeID for my video card to 0x12345678. Without this, the machine did not boot after the 10.12.6 update. I need some help getting the built-in WiFi working. Also, I am stuck on getting any audio to work, specifically audio over HDMI. Finally, when I boot with the FakeID for my graphics, I see 5mb graphics under "about this mac" and I have pretty poor graphics performance. Is there any way to fix this?