WOW,

i tested a 83.8MB step file:
V4 Mai 12 = processing 172sec - looks frozen
V4 June 6 = processing 54sec - with a nice progress bar

And even the fans of my iMac 4 GHz Intel Core i7 switched on (something i only know with keyshot rendering on 8 cores)

Thats a big step! Not only in speed but also in user confidence that MOI deals with big files too!

Well done and thank you Michael