no it is NOT normal for it to flux from 22 to 30 mhs. my machines never did that and never will do that.
usually when this happens. it's bad power connections / bad risers. something along those lines.
on your mining pool it is normal. but the actual miner, should not be fluxing.
anytime i see that. it's trouble shooting. and again check power connections/risers.
if u hashing 30 m/hashes. per card then with in a given time frame of say 10 minutes. u shouldn't see less then 28mh's more then a few times. and from what i see your power fluxing. so msi after burner it up. go to monitoring and look at your power lines for all gpus.. if your bouncing up and down. it's power or risers problem.
i feel maybe your risers suck ... truth be told. most do. find better ones. i went through 3 companies 1k plus in risers before i found my gold standard ones.
if your power lines in afterburner are stable .. no more then a 5% flux. then could be internet connection hdd cpu, who knows whats holding it up.
when ur mining make sure ur task manager shows cpu hdd memory are not maxing out randomly.
i had a pair of risers that maxed my cpu.
had a pair that maxed my hdd.
every few seconds cpu and hdd would 100% and effect my hash rate.
check all these things and you'll be better equipped to get a more "stable" hashrate.
all these honkies saying fluxes are normal, hash rate up and down is normal, .... to some degree yes.. but honestly there is so much crap equipment out there, until you messed with tons of this like i have, it's hard to know whats right and wrong. and from i see. WRONG. but then again. im just good at this i guess now
. the rest are either lazy, don't care. or waiting for the house on fire story. my machines do not flux like that. they used to. and the advice was the same. don't listen to it. fix your shit. or if your going small. work with what you got, and stabilize it best you can by checking all the things i mentioned.