I'm still pretty new to this, so I apologize if this is this is a dumb question,

but should my mining have gone down going from 1.8.1.7?

I'm running a 980ti and a 1080ti. on 1.8.1.7 they were both mining phi at a rate of about 0.0015 a day. on 1.9.0.0 the 1080ti is mining skein and the 980ti is mining phi at a total rate of about 0.00125 per day.

Is that just coin markets changing I guess? I ran precise benchmarks in both versions and I'm on geforce 390.65 drivers.