I’m having some issues with Simpliciter crashing mirack and bringing down all mirack instances in the session (in AUM). Midi controlling AU parameters of Simpliciter and also using LFOs.
But it looks like some kind of sampling bug because it makes the sample recorded in simpliciter corrupt and also reloading of the session crashes mirack. A shame because Simpliciter is a very good module so I hope this is fixable. 
I’m not sure how sample management works within miRack but it seems that if you save a preset with Simpliciter with a sample and which also contains a bug, then any other presets with different samples saved with Simpliciter also gets corrupted unfortunately.