So I have my 8 core MacPro doing great tings with M100 V13.0.2 It has been doing very well till recently. Still does well except for exporting to QT Computer 0-255. Whatever codec I use, be it M100i or 422 or 422HQ does not matter but any reasonable length program of say 1 hr + duration does not successfully export in this manner with memory allocation error/failure warning comes up. I have 8Gb of RAM and I export to CalDigit HDPro RAID array. The computer has plenty of grunt, that's for sure.