Game lags (Need for Speed: Hot Pursuit)

In general, I play for about ten minutes, after which terrible friezes begin, which disappear after a minute. And so everything is in a circle.
Litsuha game in Steam.
I heard that they say that the game has a priority on the processor and vidyuhu is reset.
How to fix it?
Processes amd fx 8370
Vidyuha Nvidia gtx 660
Everything is in order with the temperature, within the normal range. Therefore, this is not the point.