I lost fan control on an MSI 580 with the 19.12.2 version.  Once I reach the mid-60's, the fan control goes in reverse until it gets down to 13%.  Then the temp goes into the 70's, throttles, and eventually faults.  Even setting -fanmin won't stop it from dropping down into the teens.  I need to roll way on back.  I think fan control is one of the most iffy things about Claymore's miner.