Sony is really having some quality control and regression testing issues. I heard somewhere that one of their lead developers for SVP left, and since then things have been going downhill.
It is frustrating when you are trying to make a living and have to put up with all this cr*p. When I first moved to SVP8, it was great and stable, and previews were like butter. SVP11 was probably the most unstable for me, but surpisingly, SVP12 appears to have reversed the downward trend, although there is still room for improvement.
I wonder if their is going to be a SVP13, or are they going to go to 14?