I recently made the switch from ETH to ZCash to Monacoin to just mine whatever is most profitable at the moment with my GTX 1080 Ti.

I am having an issue with my reported hashrates and what ASIC pool and Suprnova both report.

I get about 68 MH/s on my card if over clocked, 65 MH/s at factory settings, and 57 MH/s if under-volted.

At the 57 MH/s setup ASIC shows about ~38 MH/s and Suprnova ~45 MH/s. I have tried different miners with the same results, all report ~57 MH/s and the servers still show the same values no matter what. Suprnova will sometimes increase to 55-62 (maybe for a few seconds), but 95% of the time its at 44-45 MH/s.

I did not have this issue with ETH or ZCash. Are these servers skimming?

Tried multiple miners with no change, but I'm currently using Tprovt's most recent CCminer release (May 14th v2.0).

I have contacted both sites with no response and I have not been able to find anything regarding dramatic differences like this. The only info that I got was a response from two others were having the same issue, one using ASIC and the other using Suprnova (both having lower hashrates shown than their computers report).

Anyone else experience anything like this or know whats going on?

Thanks