When I installed xt2 on my new 64-bit laptop, it wasn't having any of it. It kept crashing and losing the .ini file. Fast forward a year or so, and for some reason xt2 is working better and more stable than it's ever been. For large tracks I mean. I don't mess about too much with automation anyway and I don't usually have a very high track count, preferring to program in the complexity beforehand.
I don't know if it is the 64-bit thing - it wouldn't appear to be possible, but
when I move and resize - you know general editing - xt2 is very smooth.
I have also noticed that somehow it uses the three cores on my laptop (it is a triple core). I've said it before, but I'll say it again: I have REAPER, FLStudio, Podium, Ableton lite and Studio One, but I probably make more music with xt2 than anything else. It would be great to see a new version, but even xt1 still works great - just don't do large track counts etc..
Anyway, I made this with xt2 a month or two ago - it's not complex, about 16 tracks - no more. I just remember doing it from start to finish - uninterrupted workflow - in a couple of hours.
Here it is if you are interested:
Studio One is doing it for me in a big way these days. I sort of took off with it where I left off with Cubase. I just can't stop coming back to xt though