Difficulty is very high. It's hard to get a share in with 1.5TH/s. It took me 12 hours to get one share with 1.1 TH/s.
Remember the 3 days PPLNS. Your payout dropped because some of your shares from 3+ days ago have fallen off.
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in other words at this time isn't profittable mining in p2p with <1.5 TH / s?
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