Mine is running absolutely stable. Only ever have to reboot due to updates.
I am running OMV - I have 5 x WDC WD40EFRX-68WT0N0 drives with Raid-6 and then LVM via the OMV LVM plugin - I'm running NFS, Samba, cloudflare tunnel daemon, and Docker (in docker there's portainer, duplicacy, traefik and authelia)
If it helps I'm only using the 1GB NIC and I do have the battery for power supply stability. Oh and I'm on 5.10.21-rockchip64 #21.02.3 SMP PREEMPT