Bitfury B8 does not support large stratum.notify messages. P2pool needs large stratum.notify messages in order to be able to transmit the large coinbase transactions. That's need to take up this issue with Bitfury's software engineers.
I think NYC needs to add to the various exchanges as soon as possible. Between the exchanges send huge sums of money and no one can refuse to do a fast and free translation. While NYC is presented only for yobit.net he will not be given development, which is worthy.