First off all download managers and torrent. Download, which run in the background during the game, block the channel through which the signal is transmitted, and because of this increased ping. If you disable all active downloads, you will be able to do ping ten times less than if you play with enabled download.
Reduce the system requirements of the game. Sometimes the ping increases due to the fact that exposed to too high graphics settings, the computer is unable to cope with the load and starts to "slow down". Of course, increases ping. Release the processor from unnecessary load, reduce system requirements to the minimum for comfortable play.
Another reason for the increase in pingand can be programs that run in the background during the game, regardless of the fact, they are downloading the updates or not. Keep in mind, the more you free up PC memory load, the more resources it can allocate for your game. Turn off all programs except the one you are now engaged.