MP 1,1-5,1 cMP 5,1 Monterey Restart Crashes (Cold Boot OK) & No Wake from Sleep & Stutter

[Rico]

Greetings,

I have a few issues with both Big Sur and Monterey that were not present in Mojave with the same hardware:

1. Under Mojave, the computer would execute normal Restarts, and successfully self-execute Updates from System Preferences; when I tried Big Sur, it was a nightmare to try to install with OCLP 0.6.3, even with just my RX 580 (flashed), a single display, and a single blank SSD installed. I would get partway through, then on auto-Restart, it would variably crash partway, or boot into recovery, or just panic. (Each attempt was with a blank SSD) Tried the usual, strip the hardware, reset NVRAM, SMC (several times each). Lather, rinse, repeat.
   
   I finally found and read up on the Big Sur boot-loop issue, and instead of allowing Restarts, I babysat the install and did a hard Shutdown with the Power button each time I noticed a Restart beginning, before it got to Post/boot screen. Then I followed with a cold start, and in this manner, eventually got Big Sur installed; restored with Migration Assistant from backup (took hours, for some reason); It ran fine, more or less, used it for a few weeks, But!™…
2. Almost immediately I discovered I could not wake from Sleep, using mouse, keeb or Power button. Nor could I SSH in and gain shell access. Hard Shutdown required. Each of (just a few) such incidents, and I eventually disabled Sleep. (Not a massive issue, but one I’d like to resolve). Once again I disconnected /removed everything I could, including USB peripherals; no joy. Tried also to update OpenCore; no changes to either Restart or Sleep issues.
   
   Next, I made the mistake of applying a Security Update package from System Prefs, and again it crashed on a missed auto-Restart and eventually borked my entire install completely.
   
   In verbose mode, the last line before the screen is scrambled (usually) reads:
   
   AMFIInitializeLocalSigningPublicKey: failed to get local signing public key (xxxxxxxxx)
3. For [reasons] I decided to just get onto Monterey with OCLP 0.6.6, and a stripped down hardware config; all of the above problems reoccured: Restart crashes during install, babysitting required (and still failed a few times), still can’t Sleep, and I don’t dare try to install the latest Security Update.
   
   Then, suddenly, I start getting audio stuttering/skipping in Music, QTP, iMovie, FCP, and even Safari. Lots of troubleshooting later, I discovered if I unplug my USB audio out, or either launch or quit Airfoil and/or Satellite, I can clear the issue for hours, if not days. But it always comes back. Annoying, but I can live with it if I have to.
   
   I have reinstalled all my hardware and peripherals, and it functions the same, and I can reliably do work (other than audio at times). I just want to be able to safely Restart, install updates, and Sleep (to both save power costs and reduce the massive amount of useless heat generated.

Any help or clues would be appreciated. I’ve searched extensively, and find similar issues, but no resolutions.

Mac Pro 5,1 (Mid-2010) 2x 3.46GHz 6-Core Westmere Xeon | 128GB 1333 MHz DDR3
Displays: 3x LG 4K & 3x AOC 1440p
Slot 1: Sapphire Pulse RX580 8GB (flashed by MacVidCards) (drives 3x 4K)
Slot 2: Highpoint RR840A (v1.2) 16 channel SAS/SATA
Slot 3: W4100X (drives 3x 1440p)
Slot 4: (empty); gate cover hosting SATA/eSATA adapter to external drive docks
Bay 1: 870 QVO 1TB boot drive
Bay 2: 8TB WD Red
Bay 3: 8TB Seagate Iron Wolf Pro
Bay 4: 10TB Seagate Iron Wolf Pro
Optical Bay 1: Superdrive (OEM)
Optical Bay 2 (SATA II connector): 870 QVO 1TB (boot clone)
Optical Bay 2 (physical): 8x 850 PRO 1TB –> 8TB RAID 0
USB: multiple input devices and webcam via USB 2.0 hubs; audio out: AudioEngine A2+
FireWire: (nothing current)
Line Out and Optical in/out in use
WiFi & Bluetooth Upgrade (Broadcom BCM43xx; BCM_20702B0)