I believe a while back there was some issue regarding soloing and RMX
(not sure of the host but I'm using SX 3.0.1).
When using many midi tracks (50 or more) , soloing a track when RMX is running stalls my system for about 10 to 15 seconds. When I take solo off the same delay happens. It doesn't crash my system just puts it in suspended animation. Any help would be appreciated.