Hmmm thanks for the feedback. I steam in a normal pot but have friends who use instapots. Will continue to watch and keep in mind if they have trouble.
Another thing to try, if you haven’t, make sure the eggs are room temperature.
Bursting shells are caused by an abrupt change in egg temperature and thermal expansion as the egg quickly increases in temp.
If they’re at room temp, they heat up less quickly and the shell has a chance to adapt.
For what it’s worth I have the best luck when I steam rather than boil.
And has been said already, older eggs are better, don’t wash/leave bloom on if you’re going to store at room temp, cold shock helps separate membrane from egg, crack shells and leave in cold water as they shock to further...