New epoch today cause all my 8gb cards to lose a bit of hash. Also getting a bunch of rejected shares too. Is this pool side? or the miner?
In which pool are you mining?... now with the new epoch the Mhs of the 4Gb have got reduced a little bit more... but 8Gb should not be affected. Sometimes a restart is usefull if not well generated new DAG
Ethermine. I did several restarts and it finally got back to about 100%. I am seeing more slightly more stale shares from the poolside. Probably poolside issue.