The most important thing about this thread... is that it exists. Downtime is necessary, we all know that... but when we are directed to the forums for more info, and that isn't here we get cranky REAL fast.
That said, I agree with a statement made above. The more people around, the more the powers lag. My personal pet theory is that the GM code which balances out your targets level with your own is going nuts with so many people of different levels to track in so many different parts of the zones. Just my sneaking hunch.