PC won't shutdown completely

Hi, I've got a well running hackintosh with these specs:

CPU: AMD FX 8300
GPU: GTX 760
RAM: 16gb
Motherboard: Gigabyte 970A-DS3P v2.1
Audio Codec: ALC 887
Ethernet Card: RTL 8111

Bootloader: Opencore 0.6.0

Everything is working fine, except shutting down.

When I click to shutdown, the system goes to a black screen and after a while it stops sending video to the monitor, so it´s just normal right? No. After that, my mouse lights still blink, indicating that the motherboard is still sending power to the usb ports and, the power light on the PC keeps turned on (restarting works fine).

What I think that may be causing this is poor USB management by macOS, so, I've tried a couple different things to solve this:

Using SSDT-EC-USBX-DESKTOP.aml found on dortania guide;

Using SSDT-EC-USBX-AMD.aml which I found online;

Using XLNCUSBFIX.kext found on dortania guide (which made my system slower);

And several combinations of them, all without sucess.

All my USB ports work fine, it's not like they aren't recognized by the system.

I've also tried many guides to map them using my dumped DSDT, but with no luck, apparently my DSDT don't have the EHCI and XCHI ports well documented.

I would really appreciate it if someone could help me with this, the only thing that's keeping my system from running perfectly.

submitted by /u/idontknowuknow
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