Yeah I agree, It is becoming more and more of a problem now that a higher volume of people are switching from poloniex to bittrex.
No, I don't have any solution. I used to like polniex back in the day because it was fast. Though they have been laggy AF these past months. Also their new terms of service is scary, so I quit using them.
I don't have as much time to trade these day so I haven't experimented to much.