I have a tune in Live with about 13 tracks and Reason Rewired on a channel. This is just output 1+2 from Reason on a single channel in Live. If I attempt to take one of the NNXT's from the Reason Rack and plug it into the "hardware" interface on reason inputs 3+4, and then assign those to a separate track in Live, my CPU shoots to 700%
Happens on both 3.0.2 and 3.0.3