If you are using a Sound suppressor, then enemy AI will always detect you, even at a great distance, even in a forest(where a lot of other sounds), even at night, even in the smoke and even in the fog! In ARMA3 impossible to play in a stealth mission and at the same time to use stealth attacks, because the enemy AI, will always and always hear you and immediately detects your position!
The AI (!any level of skills in the game) not should immediately detect the enemy, if this enemy, uses sound suppressor, especially at long distances. In the game not exist alien predators, from another planets. But, we see exactly this! Each man in the game, must has a real limit of the human hearing ability! If the Sound supressor does not hide fighter, then, why sound suppressor exist is in the game!?
Please see video example: http://www.youtube.com/watch?v=NZH2dAK57wQ&feature=youtu.be
In this video, the enemies existed in the map only in the direction of the my shots. How the enemy was able to determine my location, if I use the sound suppressor from a large distance? And the more I was hidden in the bushes. It's impossible!
I remember "Operation Flashpoint", where if you used a weapon with Sound Suppressor, then the enemy bots were not able to immediately detect player! They ran, shouted, looking around. It was adequate reaction and it was very realistic!
Why do we not see this in ArmA3?