This week i played live with M+, only wav audio stems and only internal audio effects, without any vsts, but anyway right in the middle M+ just freeze.
Before the live, during soundcheck i was showing M+ to friends its capabilities, and loading FM8 and massive on the second group, but obiviosly i deleted all that unwanted stuff before live.
During the inspect of crashlog, i found that FM8 was still in memory for somehow, that means after you delete the instrument, you RAM still occupied by unwanted stuff. This is how NI handle this cases.
Hope you guys dont repeat my mistakes :)