You've removed the dev fee for people mining Cryptonight on AMD R9 gpus? Surely you're about 4 years too late on both counts...
Hashrate for deleted devfee :
AMD R9 390 Decred 950 MH/s
AMD R9 390 Equihash 0.38003 kSol/s
AMD R9 390 CryptoNight 820 H/s
AMD R9 390 X11Gost 3470 kH/s
Well, we know that few people are now mining on this algorithm.
We are trying to expand the list of algorithms that do not take devfee