For R9 Fury 3GB Fiji GPU only works 15.12, another driver will get 0 H/s. For R9 300 and 200, I recommend AMD Blockchain Drivers, best performance for all algos. The problem I you have a rig with R9 Fury with 15.12 driver, I will be great for equihash, but for ethash you will get a low hashrate due this driver does not have DAG fix. For RX 400 and 500  Blockchain driver or Adrenalin.