RX 580 Frame rate drop

Hello again, i was here a short time ago because of my RX 480 and it got solved, but this time with a RX 580 the same isn't working.

I´m playing Doom (most noticeable) and frame rates drop from 100+ to 20 something´s and then it goes back again.

This time i didn't even used Sapphire Trixx just Wattman and still getting the drop. I got power limit +50 and max temps at 45 and 65.

My specs are:

Windows 7 SP1 64 bit

ASrock 970 Pro3 R2.0

AMD FX-8320

20GB Kingston DDR3 1600mhz

Sapphire RX 580 8gb limited edition 1430 mhz (the blue one)

LC power 650 silver 80 plus

 

Any input will be greatly appreciated, because this time i have no clue what´s going on.