How to change your conf.ini to get the most out of the game onto the screen. 
Edit your conf.ini file in a simple text editor, like notepad. Conf.ini can be found in the root of the folder where you installed IL-2 1946. 
Widescreen: Determine what your screen's native resolution is in width x height, you should run Windows in this resolution as well, otherwise settings below will not work. Check all the settings and their values listed here! 
(Popular values for width x height:  1680x1050, 1920x1080, 1920x1200) 
[window] 
width=width 
height=height 
ColourBits=32 
DepthBits=24 
StencilBits=8 
ChangeScreenRes=0 
FullScreen=1 
DrawIfNotFocused=1 
EnableResize=0 
EnableClose=0 
SaveAspect=0 
Use3Renders=0 
As to prevent a paratrooper error / hang up at 90% while loading a mission: 
[Render_OpenGL] 
(...) 
TexCompress=2 
(...) 
In order to have long distance viewing: 72km in stead of 36km: 
(You will need powerfull enough hardware for this, if your framerates drop significantly, revert back to =2) 
LandGeom=3 
If you want to disable the mod that makes you have to open bomb bay doors: 
(Add the [Mods] section to the bottom of the file if it's not there) 
[Mods] 
BombBayDoors=0 
** Feel free to add to this **