Had similar stability issues on a related board - orange pi 5 plus. Specifically wouldn’t reliably come back up on soft reboot
Also there is apparently an arm port of proximity but haven’t tried it
Also there is apparently an arm port of proximity but haven’t tried it
Other issue I hit was ssh dropping out (but other ports staying online). Think that may be a software bug though
I use Orange Pi 5 Plus in my home lab and I've found their builds of Debian are rock solid though a bit sus hosted in a Gdrive and pulling updates from Huawei repos instead of official. They do tend to be one or two kernel versions ahead of Armbian so it's unclear if the added stability is due to kernel version or some other patches and secret sauce. It has been quite some time since I've tried it. Ops 6.12 is well newer than the 6.7 or 8 last time I attempted Proxmox.
I've also found a lot of instability in what SSD you choose. Things are real bad on Samsung but after some research the Lexar nm790 is especially low power and this seems to have resolved my instabilities. There seems to be some kind of power handling issues on the oPi 5 Plus.
No ECC for an hypervisor running VMs is scary too.
Although ZFS is still useful even without ECC.