http://bugs.winehq.org/show_bug.cgi?id=11674
--- Comment #302 from Stefan Dösinger stefan@codeweavers.com 2013-05-10 05:35:04 CDT --- The bottom line of my previous post: The evidence so far does not support merging the glBufferSubData patch. While improving nvidia, it would make other drivers worse.
I'm currently working on our own implementation of a command stream / worker thread, I hope this makes solving this issue easier.