Autogen tweak that might help

Many of you have been frustrated that you can't control the density of autogen trees verses buildings because we only have one slider to cover both of them. Some have also been frustrated that our lowest autogen setting is more dense than FS2004 at max density.

If you add these two lines to the [TERRAIN] section of your FSX.CFG, you can define the max number of objects in a terrain cell for trees and buildings independently. The slider will scale down from the numbers you set as the slider is moved to the left. The max tree value in FSX as released is coded to default to 4500 and the building default is 3000 (as shown below) and the absolute max FSX will recognize at all is 6000. Of course if you raise the values beyond the defaults, you will obviously be increasing density and lowering fps (so don't complain if you do this...). The point in sharing this information is that with these settings you can specify what the values are yourself. I had to edit this post because of a bug. Be sure not to set either number to 0 as that will cause problems, but setting it to a very lower number will give you nearly 0 objects.



I hope this is helpful!

Comments (26)

  1. Anonymous says:

    Strange about the crashes, I’ve used those lines at various points in the development cycle with no problems. It will be interesting to see if any other users have similar results.

  2. Anonymous says:

    Even I was having a hard time reading my own blog when I would try to post late at night…

  3. Anonymous says:

    Excellent Paul!! 🙂 Just what the doctor ordered.

  4. Anonymous says:

    We (okay not me 🙂 are working on the Gmax stuff right now. It’s going to be a bit before we have an exporter that works, but dev is working hard on it!

  5. Anonymous says:

    Oooh thanks. Going to play with these settings right away. The new blog theme looks nice too. Much easier on the eyes.


  6. Anonymous says:

    you could always give it a go, if it doesnt work for you.. then change it back.

    I think the purpose of this is to more memory to texure loading. if you have quite a bit of RAM it might show an improvement.

    Maybe someone can shed more light on this.

  7. Anonymous says:

    For some time I’ve believed that Flight Simulator is really a canvas and toybox for flightsim enthusiasts and developers.  I am now convinced of that.

    I confess that finding out features of FS-X is getting to be more fun that actually flying in it.

    Thanks to Bill Laeming, I got the tip to create a new "Aircraft" folder so I can install my FS9 models.  I can even create new "hangars" for different airplanes – why mix old time props with new tin sausages?  Props can stay in Airplanes.1 or Airplanes.props, as long as FSX.cfg knows where to look for them.

    The aforementioned tips to improve fps have worked on my system – and it’s just another splash of paint on my FS canvas to play with now!

    Now to wait for the SDK updates (gmax FS-X scripts) so that I don’t have to convince my wife to let me buy 3DSMax….

  8. Anonymous says:

    Could someone go into detail how to do this tweak. I am new to this.  I can not figure wher i put all the lines .   NEED HELP

  9. Anonymous says:

    look in c:documents and settingsyour nameapplication datamicrosoftfsx

  10. Anonymous says:

    Cyber OPs…  I created a new "Aircraft" folder off the main FSX folder (the same structure that FS9 has) and added the new line to the [MAIN] section of the fsx.cfg file.




    THen, I simply copied over the desired aircraft folder into it.  (Of course, you can still copy the folder into the SimobjectsAirplanes)  The advantage is that if you are going to use an autoinstaller, you can point it to the FSX main folder, and it will seek the Aircraft folder in there.

    Your main convern in moving the models over is that you also move any associated gauges and sounds into the proper FSX folder (or check the panel.cfg and sound.cfg to alias the corresponding FSX gauges and sounds.

  11. Anonymous says:

    What is the purpose of the TEXTURE_BANDWIDTH_MULT=400.  My .cfg is set at TEXTURE_BANDWIDTH_MULT=40

    Should I change mine to 400?

  12. Anonymous says:

    I did the following modifications to get 3-10 FPS increase in a system set very high, but not the highest settings.






    Water 2.x low, global=very high, traffic(all types) 30%, 1280x1024x32, using X1900GT/2GB RAM/AMD64 3700+

    Detailed(Seattle) 9-15 FPS on the ground (cockpit/spot)

    At 19K altitude 20-30 FPS in 737-800

    Thanks for the tip

    Dave D.

  13. Anonymous says:

    I would like to import some planes to but how do i go about doing that, is there some sort of tutorial that explains how i can het my planes from fs9 into fsx ?

  14. Anonymous says:

    Ok i managed to get my fs9 carenado planes in im definatly happy now because they work completely without any problems at all.

  15. Anonymous says:

    I just spoke with the developer and he looked into the code, found the bug, and the solution is to set the values higher than zero. I’m sorry, he thought it should have worked with zero as well until further investigation indicated otherwise. Maybe a safe minimum would be 10?

  16. Anonymous says:

    you need to set the "show hidden files and folders" in the folder options menu. the problem is Application Data is hidden by default in windows.

  17. Anonymous says:

    Thanks for the comeback on that P-12C

  18. Anonymous says:

    i got issue that in the daytime the buildings are white and bridges are white the texture are justnot showing up even the taxiway signs are white works fine in the night i don’t know why i got GEforce FX 5200 card

  19. Anonymous says:

    i tried putting my planes in but i got all kinds of messages saying this was designed for fs98 or this was made for fs2004 and that it can’t use it or something like that very annoying and there where no sounds also the panel didn;t show correctly, are there any other things i need to change ?

    The thing is im a big cessna fan and i love the older c150, c152 models etc. And since there are no new planes for FSX like those yet i wanted to use the ones i had.

  20. Anonymous says:

    It appears this was left out of the original release mate…



    It really does increase frames.

    Also one of our resident Mods at has managed to apply these changes and is getting fantastic frames throughout!…

    This is all fantastic news.

  21. Anonymous says:

    Might by me but I have the retail deluxe version installed and cannot find an fsx.cfg file on my system. Does this need to be created manually?

  22. Anonymous says:

    Thanks for this info Paul.  It really did the trick for me.


  23. Anonymous says:

    well what i did was put the buildings at 1 and the trees at 0, there where still some trees and all was running fine until i did the following.

    1. After shutting the engine off and wanted to turn it back on using engine autostart the game crashed with the message that it could not write to memory, the crash was in FSX.exe

    2. The same crash with the same message happened when i was slewing and going back to the normal mode.

    Should i not go lower on a certain setting ? I was just trying stuff out offcourse so no harm done but im just wondering if there is a limit to how low you can go.

    Just a strange thing about it not being able to write to memory, after i took those 2 lines out all was running without crashes again.

  24. Anonymous says:

    Does any one monitor questions?  I am new to this.  I would appreciate any help

  25. Anonymous says:

    Òk now i have the following and no crash yet but still the question remains is there a minimum limit which if you cross that make the game crash ?








  26. Anonymous says:

    I tried it but the following things started to happen shortly after i added it.

    1. After shutting the engine off and wanted to turn it back on using engine autostart the game crashed with the message that it could not write to memory, the crash was in FSX.exe

    2. The same crash with the same message happened when i was slewing and going back to the normal mode.

    However despite the crashes framerate did go up, but i rather play without the crashes.

    I hope there is a way to tweak FX without getting crashes.

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