The video seems good. I mean this guy was really putting it through its paces. Doesn't seem to have the fluidity that an Apple device has but there really was no delay as the poster was hitting buttons. I didn't really have a problem with my Q50 loaner but I did notice a few times that the volume was slow to react. I have no idea what version the software was.
So...In Touch freezes are one thing...although are they disappearing with the latest software (the board seems to be quiet about it).
The speed of the system seems plenty fast.
Lesson learned to Nissan hopefully (but corporations never learn). 1. Oversize your processors, test the heck out of your code and beta test with real world people.