@anthony no it’s not that bad it depends what modules you have on it to how much it’s working in the background mine is between.90 and 1.5 cpu usage once everything has loaded, ram is a different story and goes down over time now until it crashes the Pi that’s why I’ve got a Cron Job to reboot the Magic Mirror software every 12hours for me, which has seen it go for days without issues.

@rts58 I stand corrected the latest version of MMM-System-Stats locks up after 13hours of the Pi being on, I’ve left a message on his github so hopefully it will be fixed as it’s the Pi’s only true stat reading for everything that you need to know the Pi is doing. Oh if your not using video modules you can get 16Mb more ram 🐏 by taking it from the graphics if your on a Pi 3B+ You can use the desktop

Start Menu, Preferences, Raspberry Pi configuration, Performance, then change GPU memory

or use Terminal

sudo Raspi-config 

Advance
Memory Split
Ok
Then it will ask you to reboot

@bachoo786 hi mate I’ve got a cronjob running at 0400 and 1600 to stop it locking up I’ve just noticed the new one2.7.1 starting to eat the memory as I’ve disabled the cronjob to check out the latest down to 9% after 10hours. So it needs the restarts.

Terminal
Type. Crontab -e
Put times below the line below

m h dom mon dow command

0 4 * * * pm2 reload mm
0 16 * * * pm2 reload mm

Link here https://thepihut.com/blogs/raspberry-pi-tutorials/34930820-running-things-regularly-cron

@stalker401 i would say it’s running out of memory, as even my Pi4 4Gb does, install watchDog it will restart it when the mirror crashes, electron kills the memory ie takes up too much memory.