Just finished installing my first hackintosh, have a few questions

First, I'm having issues getting audio working. My motherboard uses the Realtek ALC892 audio chipset. I'm using Intel UHD 630 graphics on my i3 8100 with an Asrock z370m-itx/ac motherboard. Trying to connect it to my Asus monitor through HDMI to use the built in speakers. It's finding my Apple TV as an output device, but wont detect my monitor's built in speakers which work in Windows 10

Second, is it true that Intel wifi and bluetooth modules don't work at all with macOS? I have the Intel Mausi Ethernet kext to get the ethernet running, but is it hopeless to scour the internet for a kext that will make my wifi work? And if there is no such kext, can someone recommend a good, cheap USB adapter that will work?

Third, I really want to get primarily facetime working, and would also like to try to get imessage working. iMessage isn't as big of a deal, facetime is the priority. Where do I start troubleshooting that?

Last, I'm running an iGPU and noticed that there's some screen tearing. No artifacting necessarily, but is there something I can do to improve my iGPU's performance?

Thanks again in advance!