Miner "not working" as hard as usual

[FubarPerson]

I've noticed that my miner isn't "working as hard" as usual (about half it's normal work). I've tried changing the clock speed and intensity with no change. It gets so bad, that it can't keep up with the new blocks. Anyone else have this problem? Using bfgminer 5.4.2 with GAWminer Fury.

[RentGPU]

I've noticed that my miner isn't "working as hard" as usual (about half it's normal work). I've tried changing the clock speed and intensity with no change. It gets so bad, that it can't keep up with the new blocks. Anyone else have this problem? Using bfgminer 5.4.2 with GAWminer Fury.

If the hashpower is the same as before and only your earnings is less than before then it's just the difficulty, in most currencies now the difficulty is doubled, what is the coin you are mining?