Thanks for your question.
Latency problems may have several causes, but the most likely culprit is your Wi-Fi network. The first thing to try would be an ad-hoc network. For ad-hoc, check out the page here.
The other possible cause is MIDI Loops, which are harder to diagnose (but not impossible).
Please tell me what your specific situation is via comments on the answer. We will track down the latency and find options to remove it.
Thanks!
Dan