ZCash transaction very slow! Z -> Z can take 30min for create and 5 hours for delivery. Z -> T creation time is 2-3 min, delivery up to 5 min (may be more, I don't check this). Now queue of transaction on pool is more than 1200 transaction (all want minimal 0,005 - ok.. now you can see your coins at "Requested" field, but need wait a long time). Does using several Z-Addresses on pool for payment help in this situation? Don't know. Really can help using multiple zcashd nodes, but it not easy to implement fast.