The stems separation in 12.3 really sucks. To me, it just looks bad because it looks like Ableton is implementing it just to keep up with the rest, because stem separation is the flavour of     See More not to be better than them. As a result, it is half-hearted effort. It is really slow, they say it is a problem with the Mac whereby it uses such and such processors instead of some others, and that makes it slow. But everyone else seems to have overcome it!  
Also stems separation is limited to 4 stems (vocal, drums, bass and others). Logic Pro has 8, and it is also quicker!  
Ableton has that useless feature where you can choose between high speed and high quality stems separation - why?...high speed is useless, it is THAT bad! There should only be high quality, but the main problem is that besides it being so slow, it doesn't sound that great. I would say just on par with whatever is average out there in terms of stem separation. 
I wrote to Ableton about this and said to them I was only trying to be helpful, not just complaining, but they basically brushed me off. That's ok, I'm nobody, but they should be able to see a valid comment regardless where it comes from. Don't get me wrong, I like Ableton. But because I like it, I'm also coming down hard on them when they so obviously dropped the ball.    See Less

Mpc Akai is a DAW now, with everything mentioned. Let's put them side by side.     See Less

Ableton is great for us who produce electronic music and those of us with actual ocd who absolutely cannot stand hearing things out of time. Ableton quantizes everything so well and t     See More ally the main reason why I use it now.    See Less

Bolo we were good until you put that dookie on your head! Go Dawgs !     See Less

I started in FL studio (about 5 years) and then o moved to Logic. I still use Logic a lot (mixing and creating) but since a friend teach me all those tricks into ableton I cannot find anothe     See More ork very fast and direct just like Ableton. But I mix and master in Pro Tools    See Less

I agree with most of your takes. YOU ARE DOING YOURSELF A TREMENDOUS DISFAVOR NOT USING ABLETON. Like seriously man, I’m almost mad at you. 😅 you’re a Maschine user……     See Less

and for information, I also and mainly use either Ableton Live or Bitwig !!! The MPC is a game for my outdoors escapes ...     See Less

i love ableton. cant wait to do the update on my desktop     See Less

You are correct about them being late to the party with the stem separation.     See Less

definitely was late with this update!     See Less