I was running Spark through Ableton Live 8 on a Windows XP 32 bit machine with 4 gig ram and 4 core AMD Athlon CPU, and whilst it was a little CPU hungry, it worked fine.
I've just upgraded to Windows 7 64 bit, 8 gig ram and 6 core AMD Phenom CPU and the CPU Load meter in Ableton is freaking out, jumping up and down to 80%, even when nothing is playing!
When I play the project there are massive audio dropouts and the playback slows down. As soon as I delete the track containing Spark, Ableton settles down again.
So I tried running it in standalone mode, and still got audio dropouts. The major change here is Windows 7 64bit environment. Spark doesn't seem to cope with it at all.
Tried the upgrade to 1.1.2 and no change. Anyone else experience this...?