After about 20 hours now, the effective hashrate is about 5% lower than the reported hashrate.
However, that's not to say it isn't normal. I have some machines running Claymore that are 4-6% lower as well, but also some machines on Claymore that are 3-5% higher. I will switch a 8x gpu mining rig to phoenix, run it for 48 hours and report back.
Absolutely agree, I'm not sure pool figures can be relied upon as gospel.
In fact several hours later and my pools stats are now reporting about 10% MORE than the miner is reporting.
I can live with that lol

im not sure ,but it's more about pool side ...
im on nanopool , rigs work at 428 mhs in average ( black line )
but nanopool red line give me one time 250mhs to mine , 10min later 540mhs ,next 10m 380mhs .....
can you look to connect to 2 or 3 pool in same time ( nano / flypool / ...) to get job fpr made miner working @ 420-430 all time long ?