About audio, I found this in
an old custom kernel for High Sierra (Screenshot 1). My idea would be to either:
1. Make a kext that calculates the TSC and FSB Frequency values
2. Find an easy way to get these values from the OS and make a script that calculates them. With the proper values, the user can manually input these values into the InitialTSC and FSBFrequency fields in the config.plist
I am positive that it would work if done properly, since it seems to be the same problem as on AMD APUs.
Seems that you uploaded IOACPIFamily instead of IOPCIFamily.