problem solved

i experienced today that this problem is due to server, not game engine or it was fixed some days ago.this problem no longer exist or it is script issue by server side.

nope, u are not god in this game when u use that feature,the feature name is missleading.

upvoted, but:

this isnt a real issue since in real life military has contact with each other by radio etc... they know positions and actions.the problem here game cant simulate radio talks between us and enemy ai, thats why they just shoot.doesnt matter what uniform or vehicle u use teh thing is more comlex and difficult.
this can limit custom missions vs ai the most, but thats it

yes this is exactly what i experience as well, but not just some specific objects, all textures are bad.(if you compare arma 3 textures to arma 2 or any other game, you will wonder how bad arma 3 is)
to prevent this problem you need very high or ultra texture settings, and maybe it works perfectly, which is nonsense.(my pc cant afford more then high in multiplayer,it reverts back to high)
arma 2 on lowest textures and object detail look almost the same from 300-500m then arma 3 with high textures, cos the textures dont change quality to much with distance when you see far in arma 2.

we need separated custom settings for texture details
-terrain
-building
-water
-tree
-vehicles
-infanttry
keeping the quality with distance fairly