There are no any network problems. All miners have been restarted. Hashrate monitoring from deepbits API still 10-12% less.
Can you please check if submitted shares are accounted correctly ?
Ok. Just restarted one of the miner:
Now total shares:
1195261
How much time we need to test? =)
1195610 from deepbit, 1195610-1195261=349, seems to be ok.