I've been measuring my connection in a few ways while playing BO2 online. I've had a steady 10-15 ms ping even during lag. This seems like it doesn't matter how good or stable my connection is their LAG COMPENSATION I'm guessing is the mechanicism that balances out connection issues. It seems to cause them for me. I am always on the laggy part of a gunfight with a good connection.
There are numerous people and videos being posted about the glitch with the peacekeeper disappearing and leaving you with a pistol or knife. Has this been acknowledged yet?
What are you measuring your ping to, and what ping are you measuring? You do realise your PCs ping to nearest server on speedtest will be wildly different to your xbox's ping to whoever is hosting the match you are playing right?