Performance issues with multiclient.

When I multiclient I lag horribly. Especially in my main town and boston.
I'm wondering if anyone has any effective ideas for reducing this. (I'm on enders, willing to use any other client that doesn't come in the jnlp or similarly annoying format.)
I'm wondering if anyone has any effective ideas for reducing this. (I'm on enders, willing to use any other client that doesn't come in the jnlp or similarly annoying format.)