Nextcloud slow on idle server

Hello, I am running Nextcloud on a Helios4 NAS with Armbian 5.68

It works normally, however when the server has been idle for some time (perhaps an hour or more) Nextcloud is very slow to load a new request. When the server is active, new requests load quickly.

I am confident the issue is not related to hard drives going into standby. I have used the command

sudo hdparm -S 0 /dev/sda

to disable sleep/standby of the hard drive drive.

I am wondering if Armbian and/or Nextcloud go into sleep/standby after some period of time.

My logs are here:

Any help appreciated.