So when we have performance issues ("slowdowns")?

[jamesdietz]

Dust, plane explosions,clouds,low flying over cities...Oh yes & telescopic views while in aircraft.

[Kwiatek]

I with mates got fps slowdowns from 40-50 to below 20 or even belowe 10 fps during online dogfights. It was when a few planes were fighting over land and when we made minimum FOV ( gunsight view) game slow down a lot from 40-50 to 20-10 or even lower fps. With maximum FOV ( wide view) it was ok. It happend many times.

[Havoc04]

DUST! "Effects" Agreed that is the BIGGEST FPS killer and desperately needs to be optimized! As someone had said there is NO difference between Medium and High and Low give no effects at all.. Funny it is called Low maybe they should have renamed it to "None"