It's the drivers.
If you want a good set of drivers for the 590 right now, you basically have to write your own.
Just like the bios situation, it's going to take a while for anything "official" to be released that will even address some of these issues.
Patience, is a virtue.
exactly, when i upgraded from the previous driver to the current 275.33 all of a sudden i was able to reach above 50% gpu usage in games, in the future drivers the gpu will become stable. It's not a bottleneck because a person with an i7 is having the same issues.