cubase LE 7 + motu 828 mk2 + motu micro express BUGGGG !

hi,

i have a serious problem (first of all, excuse my english…)

my configuration is :
PC PORTABLE WINDOWS 7
MOTU 828 MK2 (usb)
and a motu micro express (in usb too)

when i assign a midi channel to a midi out port, there is a sort of bug. my motu micro stops a few seconds, while cubase is going on, and my sequence is being late. after a few seconds of stopping, my sequence tries to resynch but all is … desynch.

i’ve done a video of it.

thanks for advices… !

https://www.youtube.com/watch?v=n47Dg6sOj8I