Regular drawdown fps (World of Tanks Blitz)

Playing consistently at 30 fps, play, and BAM, the drawdown of up to 3-6 fps in a few seconds everything comes back to normal. But if right before the lag click one of the buttons of movement, you're going to go, even if you released a key
Set up a minimum of mods Corean Random and sight (what's wrong with him that without him lag)