We've been working on performance and stability issues that some people have had. It's been problematic for us because fixing an issue on one particular card/driver/memory configuration can create new ones for a different config that was working fine before. There's been quite a bit of work done in this area, but before we put it out in patch form, we plan to make it an optional download. We hope to have this ready to go tomorrow. We appreciate your patience if you're having a problem. Our efforts have been totally committed to getting these issues resolved.
