We've submitted about 5 bug reports so far, but what's worse - we don't have workarounds for the last two.
No word from AMD yet if they identified/fixed these. And even when they do, it will be 2-3 months before the fixed drivers are released publicly.
So we are waiting for the 10.3 drivers to see if they fix anything. Otherwise we'd have to find the workarounds .. or wait. But truthfully, we aren't much inclined to lose more time on this when there's so much work on many parts of the engine yet, and since these bugs will be eventually fixed.