
I have noticed occasional ping spikes on a couple of the eGO servers, but nothing too major. If you haven't already, type in net_graph 3 in the console to display your network statistics. If you are receiving ping spikes that other players experience also, it is likely server side. If you get ping spikes and no other players on the server are saying they are getting them, chances are it is your connection to the server specifically.
The net_graph also displays frame rate specifics. I have noticed occasionally that, when there is intense action or explosions, the frame rate can drop dramatically. Part of this is server-side, and part of it is client side. If you see your frame rate drop drastically when the game appears to be lagging, try quitting any unnecessary programs running on your computer and perhaps lower the graphics settings, then see if that helped at all.
Good hunting, maybe see you on sometime!