FPS instability / decrease

I’m playing high settings, the game has quite unstable FPSs, 30-60 fps, but I’ve met places where it falls to 14-30. This is the fund.
As soon as I start to build, this 60 drops steadily, with a large enough complex to build at 14 fps.

On a 20 player base server, this is unacceptable, but it is unacceptable for such an FPS reduction in an upcoming game!

now 15 fp fixed at high and medium settings, low setting just rarely reaches 30 fps. Yesterday before 30-60 fps !!!
Download Hotfix !!! !!! I’m down, this game can be buried!