Low FPS every few seconds

Hello everyone! I just bought this game in Steam and want to play, but every few seconds i have low FPS. In any map (in empty map too), in any situation (it does not matter whether I'm moving or even stand and do nothing), in any graphic settings (i tried lowest setting, normal, tried to reduce resolution - nothing happend). Average FPS is about 45-60 (i turn on FPS limiter 60 FPS), but every 7-8 seconds FPS becomes 10-15 for 1-3 seconds, and it repeted always. I said that it happend in any situation, even when I do nothing on the empty map (grid). Previous versions worked fine. What should I do?

P.S. Sorry for my English, I am from Russia.

 

Please give us your PC specs.

 

Windows 7 64bit
Core i7 2670QM 2.20 GHz
8Gb RAM
GeForce GT 540M

 

• 
  Minimum:
  • OS: Windows 7
    
  • Processor: Desktop Intel i3
    
  • Memory: 4 GB RAM
    
  • Graphics: GTX 550 TI <--- definitely the problem here
    
  • DirectX: Version 11
    
  • Storage: 4 GB available space

 

I know that my GP isn`t top, but is it normal that i have 45-60 FPS for 5-7 seconds before it becomes low? I think that if GP is weak, FPS should be low all time, not only for 1-3 seconds.

 

Yes, i play with AC Charger plugged in and H-P power plan. No matter what graphics set i use, FPS becomes low on any graphic setup every few seconds. The only differences is that on lowest settings "normally" FPS before it becomes low is 45-60 and on normal and high graphic settings "normally" FPS is lower, but all the same FPS becomes low (10-15) for 1-3 seconds every 5-7 seconds.

 

check the temperatures of CPU and GPU, you may well be bouncing off of thermal throttle

 

The temperatures are normal. Also, CPU used only for ~30%, RAM used about 75%.

 

Now I tried to run the game in windowed mode 640 * 480 with lowest graphics settings, FPS limiter off. FPS was 150+ for 5-6 seconds, then falls to 5-15 for 1-2 seconds, then again 150+ for 5-6 seconds and then again FPS becomes 5-15 for 1-2 etc.

 

Yes.

 

Temps are normal.

 

Do you have v-sync enabled ?

 

Define normal

 

V-sync disabled.

 

Maximum temps CPU and GPU are about 90°C, average temps are about 80-85°C.

 

That is far from normal that computer of yours is running far too hot....

 

So it IS thermal throttleing