I play on a laptop and will go wireless for farming and lower tier dungeons, but will have lag spikes and get hit with the occasional boss AoE because of the lag. I was getting extremely frustrated with Titan HM when it came out because I would clearly be out of the AoE area before the casting bar expired, but would still get hit every time. Switched to hard wiring into the router and it was much easier. Since then I never do higher end content unless I am wired in.