I am regularly 100 ping or so, but if you normally play at that ping without much issue then you are most likely experiencing packet loss, which requires lost data packets to be retransmitted, which causes things like what you are experiencing. I would start with your own wireless network at your location... Who else is on at those times, and what are they doing? Before I upgraded my Internet connection, if the girl were watching youtube vids, my games would lag out. My connection was saturated, and not all packets were getting through before timing out. If your connection does not have heavy usage besides yourself, try rebooting your wireless router, that can help in some situations.