Yes, you can disable Action! from starting automatically with Windows 11. Just go to the Settings tab (Generali), and uncheck the option that says "Eseguire Action! all'avvio di Windows" (Run Action! at Windows startup). I had the same issue and this fixed it for me.

Hi,
Every time I launch Mirillis Action!, all my settings reset — audio, video format, etc. I'm using an internal SSD, and reinstalling or rolling back to older versions doesn't fix it.
Is anyone else experiencing this? Any known fix or workaround?
Thanks!