Different instances have different levels of stability

Blahaj has been pretty stable for me except during the recent attack

Beehaw has been kinda meh on stability

Lemmy.ml has been pretty stable when I’ve used it

Jerboa (the app I use to browse) has been hit or miss at times, but has been really stable since instances moved to 0.18.

Kbin has had no issues for me and hasn't been attacked yet (or if it has been, dev Ernest apparently fought them off, probably barehanded too).