UNSOLVED Mirror freezes every couple of days?

[Damian]

Hello.
*** Disclaimer"“” I have used the search as I do know this has been asked about many times before, but return results do not fit my problem… but concede I may be using several wrong terms in my search…

Anyways, Monitor is on smart switch to turn on/off… Pi left on 24/7.
When I turn on monitor after 2 days, I see that MM has frozen, so have to manually switch Pi off/on, and everything boots up and works as should.

Can someone please point me to what I should be looking at to stop the freezing? Not as if it is running anything intensive - stock modules and 2 small Gifs.

Thanks