Whoever is still using r9 280x... I need your advice badly!
I have weird 13-26 mh/s ETH 29-58 mh/s LBC fluctuation.
Does not depend on overcloack, power limit, page file > 32gb different PSUs voltage, temperature or whatever, tried all the shit possible!
Nicehash users buying your hashes will sometimes mine a coin with smaller dag (like UBQ) and on that coin 280x will give you its full speed.
I did setup separate zcash imning process for 280x-s & it seems like more profitable - getting 320+sols from each )