I am running Home Assistast using the formal VM on unRAID server - running latest version.
Whenever I update Home Assistant Core or Home Assistant OS It takes a VERY long time ~25 minutes.
I just tried and update of the OS from 9.2 to 9.3 and the only line in the log until the automatic reboot was
22-10-27 19:52:41 INFO (MainThread) [supervisor.os.manager] Fetch OTA update from https://github.com/home-assistant/operating-system/releases/download/9.3/haos_ova-9.3.raucb
I ran Speedtest integration on Home Assistant and it showed good speeds
I remember the updating taking much less time - a few minutes at most.
The restart without update takes less than 1 minute so most of the “wasted” time is in the download or in the update itself.