Crimson Driver and High Core Clock in Idle

[ultron]

hi. Since i installed crimson 15.12 drivers to my system, most of the time when the pc is idle GPU's core clock is at maximum speed. (1120 mhz). and gpu temperature is relatively high(i am browsing the internet now, fans at 1100 rpm and the core temperature is about 50 celcius and gpu utilization is %0) Sometimes, the core clock decreases to 450 mhz when idle but never down to 300 mhz. When the old drivers were installed, the idle temperatures and clocks were too low in comparision to now. How can i get back the low power consumption/low temps without go back to old drivers?