I have latested Syncthing installed on FreeNAS. Dell Optiplex 980 with i7-890, 16gb ram, Intel NIC. Boot is on a USB and data on spinners.
Every night around 3am, I would get a smartd is not running notification. Then a few minutes later another alert that it has cleared. Then again stop and back on. This cycle of stop and start would go on until evening, slowing down until finally stopping. Then at 3AM, it will begin again. The FreeNAS and Syncthing GUI also becomes very slow during this time. Syncing appears to still function fine. I’ve narrowed this down to syncthing after stopping all my scheduled task trying a different USB for boot. This only stops when I stop the syncthing plugin. I’ve tried to reinstall the Syncthing multiple times including moving the jail to a different drive.