The title says it all, this has been broken since like 5 drivers back. Now i'm forced to revert to a much earlier driver to make it work.
Here's a picture of 2 states greyed out, it keeps jumping back and forth. If i try to change a state it also gets greyed out: http://i.imgur.com/LrFlK6C.png
If you keep changing clocks you can get all the states greyed out, but it goes back to 2 or 3 states greyed out once you reset: https://i.imgur.com/33MIKzy.png
As i mentioned before, the first 3 states are usually greyed out so the GPU wont go below 829MHz.