Ardour 3 unusably sluggish
I've been running Ardour 2 for years on the same system with no problems. Rock solid, GUI works fine, processing works fine. I don't really even think about it, it just works.
I just purchased and installed Ardour 3 and it is unusable. GUI is sluggish, processing load is over 50% for half a dozen tracks, maybe five or six EQ's (the LADSPA triple band parametric with shelves) and a handful of the SC4 compressors running.
Is Ardour 3 significantly more hardware resource intensive than 2? I'm running JACK from QJackCtl with all the same settings and the difference is huge.
Running Ubuntu 12.04, AMD Athlon 64 3000+, 1 gig RAM, Delta 1010 interface.