This is a collection of FS9.cfg tweeks that I use in my config file.

Feel free to add your config tweaks in this thread. Try and be detailed on what they affect if you can. If you can provide clarity to those I have posted that is welcomed as well.

There are some modules that might get loaded with aircraft when you install them. These modules will cause FS9 to generate a message warning you the software is not compatible with FS9. Well that is wrong they still work you just need to add the modules to FS9.cfg file.

Normally this section is added to the beginning cfg file.

[OLDMODULES]
FSSound.dll=1
SOARRec.dll=1
adf2mod.dll=1

So you don't have any kind of head tracking installed and the Pan rate in the VC is just too slow. Good news you can change it here. In the controls section PAN_RATE=400 is the default. I change it to 800. 800 gives my system a good pan speed that prevents texture tearing most of the time. Can you go higher? I am not sure what the limit is.

[CONTROLS]
KBDAIL=64
KBDELEV=64
KBDRUD=64
PAN_RATE=800

There are a few tricks in this next section that I must attribute to Holger Sandman and a few others in posts that I have long since lost the links to.

TEXTURE_BANDWIDTH_MULT= depending on your systems specs you can adjust this setting up to increase your system performance. This value you must adjust and test to fit your system.

TextureMaxLoad=10 is one of the tips in the old posts I can no longer find. Now that systems are so much more powerful can we increase the load value and see any benefit? I don't know I just leave it at 10.

TERRAIN_MAX_VERTEX_LEVEL=XX Where you set this value depends on the aftermarket mesh you have installed. For the default mesh use 19 that’s about all you need.

For 38m meshes set this setting to 20

For 19m meshes set this value to 21. Be aware that when you set this to 21 your 19m mesh will show up correctly but in the early morning hours or late in the day shawdows in mountainous regions do some strange things. This is unavoidable. Alternately you can set this value to 20 but your mesh will not show up as it was designed. Visually you may not be able to notice a difference. Myself I live with the strange shadows I rather like them.

These next three values I can not explain why they should be set here. They were all in the old notes I have from posts that I can not find. I remember that the values that were stated to use were 4.0000 but I have found that with my system 9.0 works the first two entries. 4 is the place to start with then test to see which your system likes best.

TERRAIN_DEFAULT_RADIUS=4.000000
TERRAIN_EXTENDED_RADIUS=4.000000
TERRAIN_EXTENDED_LEVELS=4

[DISPLAY]
UPPER_FRAMERATE_LIMIT=25
TEXTURE_BANDWIDTH_MULT=100
TextureMaxLoad=10

[TERRAIN]
TERRAIN_ERROR_FACTOR=100.000000
TERRAIN_MIN_DEM_AREA=0.000000
TERRAIN_MAX_DEM_AREA=200.000000
TERRAIN_MAX_VERTEX_LEVEL=21
TERRAIN_TEXTURE_SIZE_EXP=8
TERRAIN_AUTOGEN_DENSITY=5
TERRAIN_USE_GRADIENT_MAP=1
TERRAIN_EXTENDED_TEXTURES=1
TERRAIN_DEFAULT_RADIUS=9.000000
TERRAIN_EXTENDED_RADIUS=9.000000
TERRAIN_EXTENDED_LEVELS=4