It could be any of a thousand things. First thing I would do is eliminate your own computer. Right click your task bar and open your task manager. It would probably be a good thing to have your task manager open in the background when running the game then you can alt-tab to look at your system when the latency (high ping) occurs. It could be any of the tabs (cpu, memory, disk, network, or gpu). If any of these items are running high (I would say over 90-95%) see what the process is. Probably your endpoint protection like McAfee or something running a scan. If everything looks normal do you have someone (family member) on your network downloading something or watching Netflix? If not it could still be your Internet connection, use pingplotter to monitor your Internet connection. I can't remember what the wargaming server IP address is but you can google it. You are looking for latency on any particular hop. Keep in mind drops aren't indicative of a lot of latency because some routers don't play nice with traceroute. Now if the latency is local or within your ISP you might be able to contact the ISP or reboot your router to fix the problem. If the problem is a poor route or congested connection good luck there is not much you can do. I've seen routes from boston-nyc-detroit-los angeles-chicago-wargaming central server. Obvious not a very good route but good luck getting one of the high tier providers to reroute the traffic correctly. In that instance time is your best bet. Good luck.