Graphics: -
Recommended that you enable S3TC compression in your graphics card setup !!!
You must be kidding. You wouldnt be able to tell a P-51 from a pink elephant with that compression enabled.
The way to go is
TexMipFilter=3
TexCompress=0 (anisotropic, no copmpression)
... provided that you have the resources to handle that. Otherwise, just use
TexMipFilter=1
TexCompress=2 <= This is the setting suggested by Hades.
(biliniear, S3TC compression)
which doesnt look as good but does save resources
The thing that bothers me most of S3TC compression is that "dot" planes only become visible at when they are relatively close, and not immediately at 20km as I set up my game.
With no compression on the other hand, they are very hard to spot at 20km, especially in some particular lighting conditions, but they *are* visible...
(but then again: I can only speak for myself, on my system with my setup etc... maybe it does look good with compression for someone else)
NOTE
If you have TexCompress=2, you must also have TexFlags.TexCompressARBExt=1
and if you have TexMipFilter=3 you must also have TexFlags.TexAnisotropicExt=1
And besides: never, ever use the in-game GUI or the il2setup.exe to change your settings (video, audio, etc). Always edit conf.ini manually.
Why? Because in-game GUI and also il2setup.exe have the nasty habit of changing more settings than you tell them to change.
When you have your IL-2 well set up, take a backup of your conf.ini and save it in a safe place, and then you can do any experiments you want (the backup conf.ini saved my ass more times than I can count). Also, with a backup conf.ini you can use the in-game settings GUI and check the changes against your backup .
A fairly good guide about conf.ini is at Mission4toay.com. There are a couple of blatant mistakes but generally speaking is pretty good.