The instrument of 2.1 version still have a lot of glitches.
There are three of those:
1. Sometimes wave morphing things like warp,twist and others dont work
2. FX Chain. Sometimes, i guess when overloading exists, some of enabled effects have stop working. I met it with modulation and delays block.
3. Filters. With no any osc enabled there are short sound which can be neutralised only by significant attack time value
I'm disappointed ,i've been waiting for update to 2.1 for buying upgrade from 1.5.
I use 64x version of 2.1