I have the same issue for a long time and until now I can't find any solution yet.
It's fixed with latest Gminer. Thanks arielbit!
Oh it seems it's already fixed with gminer what driver you currently use?
Let me try gminer thanks.
Opppsss.... I tried today it seems the problem still the same with low hashrate...
What driver you currently use? Can you share your bat file I just want to try your settings?
drivers are 430.86, 451.67 and 460.89 all of these works
my .bat is very basic
miner.exe --algo ethash --server asia1.ethermine.org:4444 --user yourETHaddress.workername
you might be using 4gb system ram, make it at least 6gb .....this issue was already long ago too when it slowed my 1080ti, this might be your issue.
might have something to do with page file ? 1070 only gets 25 m/s with 500 mem boost and 80% power it used to get 31 , 1070 Ti is unaffected