RX580 fans don't seem to be spinning, crashes system around 70c

Had this build running awhile and lately i've started having issues with it crashing during GPU usage like with 3d modeling or video editing. I just ran cinebench till it crashed once the GPU temp got near 70c. Testing CPU my fans kickin and seem to keep things cool. But it seems like the GPU fans are never going above idle. (I also repasted the thermal paste awhile back but didn't seem to help)

Sapphire RX580

Gigabyte z390


osx 10.14.3

macid 18,1

submitted by /u/Thisisbroken123
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