game collapses by steam

[Gepiroy]

Some time after the start of the game through Steam, it starts to curtail every 3 seconds. Its impossible to play! When game curtailed and i trying to use something other, mouse capturing to nothing (example: if i writing something, its stop)... Looks like a virus-miner, but its work only when launched steam and rimworld. If close rimworld, 75% chance to stop this. Help please!