Hey,
my Ableton always crash when i hit Abletons MIDI Learn and want to learn an Ableton parameter (EQ frequency) with a knob on my Spark LE.
Also i have sometimes huge latency when i want to control a drumrack instance for example.
Sometimes it also just looses the connection during my live performances.
and some presets use so much CPU that Ableton goes 20-30% up just from one Spark instance...
Altogether almost not usable :/