... BTC translations were fast enough you could easily buy on bittrex and sell on poloniex. but BTC is so slow.
I don't think that btc is not much slow , because if we can pay the fee of 1-2$ then we can confirm the amount of btc that we send .So such types of chance rarely came in the exchange to exchange , so if you can pay more then you can make more .
Well here even with the fee of 0.0005btc you need to wait atleast for 10-15 minutes for even a single confirmation .
Currently due to large no. Of the transaction such types of problems are usual for us now
It is more better to have btc and USD at two exchange equally and make buy sell speedly .