My system has been "stable" running the LK 5.9. I updated to 5.10 in the past but had issues with stability under small load, not rebooting through omv etc. so I went back to the previous version.
Running MergerFS / SnapRAID / LUKS on Seagate Ironwolves with the 1.2ghz frequency
$ uname - a
Linux helios64 5.9.14-rockchip64 #20.11.3 SMP PREEMPT Fri Dec 11 20:50:18 CET 2020 aarch64 GNU/Linux
$ uptime
20:25:53 up 67 days, 19:23, 2 users, load average: 0.08, 0.12, 0.12
I'm sticking with this until things get clearer but would like to get full use of my NAS hardware...