Contrail Problem

[Garbagecan]

Hello guys,

found this thread somewhere in our forum and thought i place my question in here to not create another unnecessary thread.

Anyways i have the problem (not a problem exactly just a minor issue) that my ai traffic, respectively other planes/players, both on Vatsim
or offline does not have any contrails behind them. Is this normal or settings related? I am using FSINN and found nothing in the settings
regarding contrails ect..but i do remember from our post your screenshot thread a picture of a member depicting ai traffic with contrails
and this picture was from Vatsim if i am not mistaken.
Anybody know what to do/change to make that work?

Thanks

Victor