So i did try different settings today and noticed some pattern with game settings.
I made my self a test mission where Abrams destroying Btr-80 right from the start, and i start in A-10C watching all these explosions with a tpod.
Notice that today i started with good looking smoke, since i had it fixed few days ago.
1. Start this mission and see good kind of smoke and explosions → http://ipic.su/aCD7h.jpg
2. Quit mission, go to settings
3. Set "Chimney Smoke Density" to 2 (didn't try it with different values other than 0 and 2)
4. Exit DCS
5. Delete folders fxo and metashaders2 in %USERPROFILE%\Saved Games\DCS
6. Start DCS, load test mission
7. See bad kind of smoke and explosions → http://ipic.su/aCD72.jpg
8. Quit mission, go to settings
9. Set "Chimney Smoke Density" to 0
10. Exit DCS
11. Delete folders fxo and metashaders2 in %USERPROFILE%\Saved Games\DCS
12. Start DCS, load test mission
13. Enjoying good flir again :joystick:
I reproduced all sequence 2 times just to be sure it works that way.
My final settings → http://ipic.su/aCD6s.jpg
My PC: i7 4790K, 16gb RAM DDR3, Gainward Phoenix GTX1080TI, SSD480GB + HDD4TB
I hope this will help you guys!