Tell us about your setup. It sounds like you've got something funky going on. I had my healer in Rift set up with a click region (did not process anything until I actually clicked on something) and I never noticed any lag at all. It was effectively exactly like driving from the healer.
[edit] Correction: due to ISBoxer's awesomeness, it was actually faster than driving from the healer, now that I think about it.
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