You card is probably way overclocked for ETH mining , try to underclock/undervolt your gpu , undervolt your memory , play with power limit ...
Currently all cards using modded bios, 4 cards clocked at 1200 core and 2000-2150 for memory, no undervolting. one card clocked at 1400 because it had shity eth has rates at without 1400 clock.
I was able to get 29-30mh on eth on all the cards when i tested after bios mod, this was over the weekend when tested individually.
If you are using claymores miner , try to set -dcri value in the bat file , start from 30 and keep going lower ... it might help
stopped dual mining completely to see if that helped. eth solo wouldn't budge over 101mh
also tried multiple pools on claymore and ethminer, 101 MH cap.
Also are you dual mining anything with ETH ?
siacoin, but i can dual mine other ethash coins at full 148 MH with dual mining sia. ETH is the only problem.
I don't understand why the ethash rates are so low just for eth
thanks for the response.