Arma3\Arma3DEV in 20-30 minutes of game - FPS 3-4

[lex__1 422]

I brought up a question again. I did the address on feedback .arma3.com, I don't remember number, and I can't look. The ticket was about falling of FPS in network game.
Today I received FPS 0-3 in 20-30 minutes in game, not in network.
Mission of Demonstration/Marksmen on start of FPS 50-60. I passed the first two points of a task, I got into the helicopter. On a half of a way to the following point of FPS I decreased till 20-30 when the camera looked down FPS decreased to 4-7. It was impossible to lift FPS, any look of the camera of anything significantly I didn't change further, FPS 0-3-7.
https://www.youtube.com/watch?v=3Qq3TuJQdvM

I kept game. I returned to Play menus \demonstrations. I chose to continue game. I press - "To continue mission". Start of mission with FPS 0-3-7.
https://www.youtube.com/watch?v=nkbWkFagvnc
The mistake on video likely concerns version DEV.
Process of Arma3.exe in a task manager had no priority, change of a priority - situation doesn't change.
All temperatures of CPU\GPU in norm.

 

http://stroybat.ucoz.ru/raznoe/2016-03-02_00001.jpg

http://stroybat.ucoz.ru/raznoe/A3_FPS_0-4.png

http://stroybat.ucoz.ru/raznoe/A3_FPS_0-4_a.png
http://stroybat.ucoz.ru/raznoe/A3_FPS_0-4_b.png

What reasons cause such lowering of the priority of process of Ama3.exe?

 

Didn't use the changed additions to Arma3.
All drivers new.
Viruses aren't present \DrWeb, AVZ\

Arma3DEV 1.57.134763 version
Windows 10 Pro 64bit
Link The report attached.

http://stroybat.ucoz.ru/raznoe/Log/ArmaReport_Log_20160302T143342_Lex.zip

My personal computer:
Intel Core i7-4770K, 4400 MHz (44 x 100)
ASUS Z97-K (BIOS 2801)
2 x G Skill "Sniper" F3-2133C10-8GSR (21,33 Ñ… 100)
ASUS GTX770-DC2-2GD5
Corsair Force 3 SSD (120 ГБ)
Chieftec 750W

P.S.
  

"Tweaked: Reduced recoil of launchers"

 

For this many thanks, I am very grateful.

[lex__1 422]

It occurs in single, in network game. On time in different intervals. It is possible to begin game with FPS 70-100, with some parameters of settings FPS can receive more than 100. It is possible on repetition, in identical scenes to receive FPS 0-3, either 20-40, or 70-100.  
The arma3launcher settings and video influence size FPS on start. That gradual falling of FPS, or sudden falling of FPS can't prevent.

Two schedules of one scene in game.

http://stroybat.ucoz.ru/raznoe/A3_FPS_0-4.png

http://stroybat.ucoz.ru/raznoe/A3_FPS_60-90_c.png

To version 1.56 I included "ExTreads" and "Hyper-Threading" in arma3launcher. It helped to stabilize productivity of system. After an exit 1.56 I switched off these options. They reduced my FPS. How to explain it?

[lex__1 422]

Today I played 2-3 hours, FPS 30-50. On the second hour of game FPS 3-7 failure. But it was leveled to FPS 30-35. And in the next 30 minutes of game FPS I fell to 1-3, the screen froze. I switched off process in a task manager.

Link The report attached.

http://stroybat.ucoz...T223042_Lex.zip

[lex__1 422]

Process of arma3.exe can take 40-50% for CPU, make FPS 70-100. Can fall to 10-15% to use CPU, to make FPS 3-20.
It is possible to play comfortably 1-2 hours. Sometimes 20-30 min. turn out.
This subject https://forums.bistu...low-fps/doesn'topen anything, there is no detail as well as at whom it occurs. Some thousands of people complain of low FPS. Not everything is identical, not all have good CPU/GPU... I see consequences in arma3.exe priority.
The same effect is and at friends. We have different systems. The general still remain sometimes low FPS. Sometimes, but it happens 1 time for one game, sometimes 4 times. There is no match, always once I restart game.
I was confused by that fact - I played always networks. I wasn't persistent to approve something. But it repeated in single mission!!!
I already wrote in one ticket. I gave comparison of work of arma3.exe  
from the allocated MaxMem=512mb/768mb. Then work of arma3.exe is very similar, when FPS 0-3.  
How many memory from 16Gb I allocate, 4 - 8 - 12Gb. There is no difference. In some timepoint it as - MaxMem=512mb/768mb.

How many reports of an error of Arma3 to send for viewing of this problem here?

What you have questions on emergence of a mistake?

What you have offers on the solution of this problem?