Hi there,
 
Most of my projects contain anything from 70 to 120 tracks. A combination of 24 bit audio  plus midi/VSTi's like Kontakt 4, Spectrasonic's Trilian, Superior Drummer, Steven Slate SSD4 etc. I would like to know how stable you are finding X2 when running projects of this type? Would you say Sonar is pretty robust in this area how about audio engine gapping? In previous demos I had noticed this wasn't particularly great. Things like opening menus changing windows during playback seemed to cause gapping. Also quite a few functions were greyed out during playback. How these things been improved?
 
Thanks
Adralicus

X2 is much improved in the gapping department when manipulating screen elements.
Even in large projects similar in size to yours.

After bad experience with X1 till X1C was released I'm now finding X2 to be the most stable and smooth running first release version ever. I have Cakewalk experience that goes back more than 15 years.

I have all the other major DAWS as well and SONAR is at the very least, as stable as any other.

As for things being greyed out in various previous demos - it is consistent that SONAR's demo versions have disabled functions. As SONAR is a non-destructive editor, there will be many functions not accesible during playback

X2 runs my 135 track Orchestral Template ok.

Mind you, it's not totally gapless yet, though it responds a lot better than any previous version.

+1 for mudgel and Bristol_Jonesey. X2 has the best SONAR audio engine so far and also the best initial release.

Agree with those guys up there ^.  I'm working on a (currently) 70 track tune right now, and it's very stable.  My only drawback is the 4GB RAM limitation of my Win32 system.  I have to pay attention to F/X use a lot to be able to keep the audio engine running.

I can't imagine any technical reason for high track counts to affect the stability of any DAW. Eventually, your computer will run out of resources (RAM, CPU, I/O bandwidth) but that's not a direct function of track count but rather the type, number and efficiency of instruments and effects. It'll be Kontakt and Superior Drummer that bring your system to its knees, not SONAR.

Adralicus I'm routinely running comparable track counts and add-ons like yours. X2 has been very stable for me.