Been using my M1 Max for a six weeks now... it's been next level buggy but that could be Monterey, or my add-ons. I'll explain...
My M1:
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Before this I had purchased an M1 Mini, M1 Air and M1 Macbook 13". My Geekbench profile is here with speeds if curious.. going back 12 years through several Macs. ? The M1 is fast (mini/air/mbp 13) but my main daily driver, my 2019 Mac Pro 16 core, Vega II Duo, Afterburner, 382gb ram etc was still faster for me in multicore video editing etc.
The M1's were quick, but would lag in that I was able with my MP to be connected to multiple screens, raids etc and have multiple programs open without slowing down. With the M1, screens could be figured out but it would never successfully index my raids and yes, I would connect one, let it go u til done and the connect another etc... it would time out (for lack of better term) each time.
Pocked up the M1 Max and thought... FINALLY a replacement for my beast.
I have had it reset out of the blue multiple times, time out on indexing or the latest bug... imessage/messages starts fine after a reset... I can receive messages, but sending results in not delivered. I then have to log out of messages, restart, log back in and wait for it to happen again.
I have three tb3 items connected to my laptop, two OWC thunderflex 8 raids, one is 112tb hdd in raid 5 and the other is 96tb hdd in raid 5 and 16tb SSD in raid 0. In the open pcie slot in this second raid I also have an Accelsior 8tb SSD card in raid 0. The first raid's pci-e slot contains a 10gbe card for quicker connectivity. Both raids have a display-port plug so between those and the laptop's hdmi plug out... I connect two BenQ 32" 4K screens there and a LG 49" wide screen.
Overkill city, I know. I work with video up to 8k so I built a quick set up got editing... or so I told myself.
Overall, I LOVE the laptop but it falls behind quick it seems on indexing, I suspect too much going on bandwidth wise. Imspike to a tech at OWC and he told me that the M1 has 3 independent busses so my set up shouldn't slow it down.
Yet... it restarts randomly, never finishes indexing all the things, finder will randomly quit and not be able to be restarted, instead showing a white dot flash under the icon for a moment as it closes again. Lol. Bluetooth randomly doesn't connect my to my sony's as well. When I do ask it to restart, it can take up to 15 minutes.
I assume it's all Monterey bugs honestly. No idea.