Just wanted to throw my info into the ring. I'm doing some testing on building a mining rig, and I've been stable on my personal desktop with Win 10 x64 on Crimson 17.11.4 drivers on an MSI RX 580 8GB- because of conditions it's running under I'm getting ~23 MH/s ETH & 60 MH/s LBRY dual mining using Claymore 10.2. For me using the block-chain drivers -vs- the production drivers changed to compute it didn't make a hashrate difference.

Once I installed the new Adrenalin drivers my hash rates went to ~31+ MH/s & 80+ MH/s with the card running cooler and using less power, however ETH wasn't actually hashing - I kept getting an error and I wasn't getting any shares into the pool - however the LBRY hash rate was legit and I was successful in mining those.
 
I've also experienced the no fan/gpu/mem speed control issues, but I was able to use wattman or afterbuner to control those.