Ok, I really have no idea if this is a thing, but I thought since Joplin was an Electron app, this might be a posibility…
I just installed SpeedFox which claims to improve start times of various apps by optimizing the database. It doesn't list Joplin as one of the apps it works for, but would this be something that would work for Joplin if it were added?
Forgive me if this is an absurd request. I ask because I've noticed Joplin seems to be taking longer to boot up.