My 24hr averages are usually very close to reported hashrate.
Even on a VEGA 64 that is OC to 41MH?
Any other GPU I've used in the past the 24 avg lines up with reported ( within ~1MH ).
Vega 64 is stuck at 32 MH for 24 hour average for me. It lends credence to the stories about how the reported hashrate is incorrect for the VEGA 64.
My theory? Some throttling is happening due to some setting. In Claymore spam the statistics button 's' (I mean really spam, try to get a few reports a second). I see it is sometimes 41 MH then sometimes I see as low as 23 MH. I think the card is throttling for a quarter second every second or so.
Anyway, something weird is definitely going on. I'm holding my breath for someone to post legit mining results. Lets see your ethermine page, average and all of a OC Vega 64 running 41MH and actually getting close to that in 24hr avg. Again, I can get my card to 41 MHs reported no problem, still comes out as 32MH for 24 hours avg.
I'm using two Vega Frontier Edition air cooled cards, which are basically Vega 64's with 16gb of vram.
You will see a worker labled c_vega_fe, this is both of my cards, one at 40Mh/s and the other at 42Mh/s. You will also see that they were offline for a bit while I was playing, which may or may not account for the hashrate difference 81.6 reported, 78 actual.