I don't have a problem with Ether Delta - unless it is heavy volume on the site.  I know that some people have better luck with different browsers.  I got a Ledger Nano S, that works with Chrome.  I have to say that once I started using Ledger Nano S - Ether Delta works way better.  I used to use Fire Fox and some days I would have issues, and other days it worked good.

I don't think you are going to find anything better for Ether Tokens until other decentrized exchanges come on line.
Upcoming potential exchanges are the Ox Project and Kyber Network. Neither of which are up and running yet.