Fix sleep on Mac Pro 3, 1?

Hi,

Just installed Ventura on my mac pro 3,1 and it works great, aside from sleep and bluetooth. Bluetooth is an easy fix, but I'm having trouble with sleep. I've spent the weekend trying to figure it out.

Specs:

2x3.0 GHz quad core xeon

16 GB 800 MHz RAM

GTX 680 Mac Flashed

27 inch LED Cinema display

Here's what I have on the issue:

When I press sleep, the display shuts off, and everything looks like it's going to work. The pulsing LED comes on on the computer. About 1-5 seconds later, I hear the hard drives spin back up, the optical drives make a noise, and the light stops pulsing. Eventually it goes back to pulsing, but wakes up again. The display never comes on.

Wake reason: UHC3

I've determined that this is related to USB 1.1, and I'm 99% sure it has something to do with bluetooth. IORegistryExplorer reports that UHC3 is PCI Device ID: 0x268a. Additionally, in Catalina, bluetooth shows up in system information under the same hex.

I've removed my bluetooth card and reinstalled, but system information still shows address: NULL, chipset as BCM_4350C2, and transport as USB, even with the card disconnected. Catalina shows nothing on the other hand. That's why I'm pretty sure it's got something to do with bluetooth. I've even removed my wifi card just in case.

What am I missing? What other device could be preventing my mac from sleeping?