This is such a hard thing to hunt done . It can be the master server, our server, the game, the mod, the map rotation, the map, or even an odd coincidence of players isp screwing up the moment. If it would be less erratic in its nature it would be easyer to nail down. Also lets not forget that nobody is going to admit to it being there fault because they would have to assume responsibility for it. So everybody finds it easyer to say its not us. On the bright side this kinda thing usually clears itself up in a week or so. (which makes me add the map rotation thing to the problem)
For the mod we do have the max ping set to 300 and the antilag is turned on so there's not much more we can do there. Wish I could do more for you guys Dean but its in the Random Particles hands now OH Sheldon where are you