That's called "steal" time. It's CPU time that is unavailable to your instance due to other people making heavy use of the CPU on the same physical machine. Upon request, a decent VPS provider may move your instance to a host with less CPU contention;
или другому питонисту спихну, ткнув пальцем в проблемное местоможно попросить товарища и без тыкания пальцем.