As a hardened but strictly amateur tweaker, I'm always on the look out for an improvement in performance, whether it be frame rates or just as importantly, eliminating stutters.It has occurred to me that I have tended to alias AI aircraft to sound packs I originally downloaded for flyable aircraft - and some of these are huge.I have searched the forums - does anyone have any information how sounds associated with AI aircraft affects performance?If there is no Sound folder or Sound alias within an AI aircraft, presumably it is altogether silent? I don't want absolute silence, but then again for the pleasure of hearing an aircraft as it taxies past, I don't want a hit to performance, especially as the half of the time I can't tell the difference between one aircraft and another by ear anyway. When the aircraft is on the other side of the airport, is the system still burdened by managing a complex sound package which I can't hear?Has anyone produced high efficiency sound files especially for AI aircraft in the same way that we have low polygon/multiple LOD models?

AI aircraft use the ai sounds(files with ai and xai in filename) in your fs directory/sound folder and not the sounds you have inside the aircraft folder. Those will only be used if you fly the aircraft yourself.So basically in an aircaft folder for ai you only need the model and texture folder.JT