FPS drops to 20, or even to 10, it is repaired only by alt + tab or alt + enter. Also, if you open the RAGE menu or the game menu, the FPS returns to normal, although the game is not paused and this should not be. Also, this is not a problem in the server, since such a problem was present on 2 servers, and other servers were not tested. The iron is not heated, Windows has already reinstalled 3 times, the problem has not disappeared. I also noticed that with such a drop in fps, my video card starts loading at 100, and with alt + tab everything returns to its original position. It also does not depend on the location, the FPS can fall both in the city and on the highway where there is no one.
Specifications:
Graphics card: GTX 660
processor: Intel Xeon e3 1270v1
RAM: 8GB 1333