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oc 0.64 released DevBuild version for 19h 5000 series cpu, will fix your problems.. mine audio stutter issues are gone now

Originally, my system was Asus X570-i (2606 bios) with 3950x + rx470, Mac running smooth, sound playing good, after that I upgraded to Zen3 5600x with 2802 bios and the rest hardwares are the same.My entire system beginning to lag/slow down, sound also messed up. I updated to OC 0.63 with latest...

I tested few day, the sleep is working fine but when I wake up the machine all my usb hdds will say ejected accidentally, and I disabled Put hard disk to sleep when possible under energy saver

fresh installed Big Sur with your kexts, everything working fine, sleep seems to work I need to test it throughly... but I have a issue if you can help me to fix, since I have upgraded my cpu to 5600x with 2802 bios, my entire system is lagging and even the audio output. I don't have such...

There no USBPorts.kext in for Big Sur? or do I need to copy the USBPorts.kext from OC usbmap.zip ? thank you

Yah! Big Sur just released, gonna use your EFI for Big Sur. Thank you

interesting... after removed all your usb-mapping, do your all usb working properly? such as usb3 speed, type-c...etc

I switched smbios to Mac Pro7,1 everything seems working flawless, except istats/sensei apps cannot detect cpu temperature and memory tab crash under About this Mac. I have already injected MacProMemoryNotificationDisabler.kext, I should not bother you but do you know how to fix it?;)

I got a cheap rx470 and replaced my gtx750,deleted high Sierra and install Catalina all my USB ports work like a charm with your files. I googled high Sierra has some issues with all usb speed running at 48mpbs. Would it be possible changing smbios to macpro7,1 ? thank you.

Thank you, but I tried your attachment 2 on High Sierra and use my config.plist it didn't work at all, all the ports are still detected as usb2. I think I'll get a cheap 2nd hand AMD card and install Catalina and see..

I tried using your EFI files on High Sierra , I got 3950x and Asus X570i and 750ti, USB and BT(BCM94360NG) didnt works at all Im using OC0.61, I just replaced my ACPI and kext files. Iam debut is HS not compatible with your Catalina settings.. Or would you like to teach us how to USB mapping...

I have same issue as OP, the Wifi/BT card is working fine in windows 10 after I installed fenvi driver. But in MacOS is an another story, Wifi works out of the box, BT not showing in system, I guess due to USB mapping improperly .