First of all, thanks to Matt Fox for his find on tweaking the autogen. This gave me the idea what would happen if i removed a file completely? So i removed the RoofDescriptions.spb from the Autogen folder and with that the building part of the autogen didn't show up anymore in the Sim (demo)!! A nice tweak for those who just want the trees without the buildings. A few of them still showed up but i guess they belong to the scenery or are generated by some other file. Because i don't have the final version yet, i could try this only in the demo. But it seems to work well. I get a lot more frames over St. Maarten, over 40 when looking down where once autogen buildings were, so it works, nothing is rendered or calculated for invisible.I now can switch ground shadows on and have them there where i want them without noticable loss in performance: the airport :)---You try this at your own risk in the final version.Remove RoofDescriptions.spb from the Autogen folder.Good luckRegards, Gerrit

Also Gerrit, Matt Fox mentioned in the tree thread he was looking at tweaking the rooftop files as well. I assume that means DXT5'ing them or otherwise shrinking them...but not removing them as you suggest. We can have the best of both worlds, I think!RhettAMD 3700+, eVGA 7800GT 256, ASUS A8N-E, PC Power 510 SLI, 2 GB Corsair XMS 3-3-3-8, etc. etc.

Hi Rett,i admit i'm having very little knowledge about these files. But i do understand they control the appearance of autogen models and the way they are textured. They don't do anything to texture formats. Unlike the file name suggests i think this one controls not only rooftops but the complete house/building autogen model. If its not there, the building models don't show up. This is proved by the fact that i turned ground shadows on. If there was still a invisible model present it would draw a shadow. Well, myself and some others prefer to have only autogen trees because 1m/p groundtextures looks better than the autogen builings already from low altitude.Regards, Gerrit

Hey Gerrit,Tried this little deal. Works well naturally since autogen buildings pretty much "go away". Interestingly enough, I removed this file, then cranked Autogen all the way to the right. Surprisingly, many additional buildings showed up with very little impacat on FR. Have mine locked at 25 now so progress is being made.

I also removed the file. The houses are gone and I like the look much better. I didn't see much increase in frame rates and actually lost a few when I cranked auto-gen to the right all the way. I'm sure that is due to the increase density of trees. And my system is mid level these days. I do have the smaller tree textures. Thanks for the tip!Bob...

There is a better way to do it.. as per P-12C Pilothttp://blogs.technet.com/p-12c_pilot/archi...might-help.aspxThis is the default.TERRAIN_MAX_AUTOGEN_TREES_PER_CELL=4500TERRAIN_MAX_AUTOGEN_BUILDINGS_PER_CELL=3000You can reduce those values in fsx.cfg Manny

Good find Manny! Now I've got some more "stuff" to tinker with.:-cool

I'm looking at reducing the size of the autogen buidling textures. There are a ton of textures for buildings - I'm just trying to figure out which ones would be the best to start with. I think I might get to this later tonight. May post something then or tomorrow.You could also see my other two threads with reduced cloud textures and reduced tree textures. See:http://forums.avsim.net/dcboard.php?az=sho...d=355651&page=6andhttp://forums.avsim.net/dcboard.php?az=sho...d=355657&page=6Mike Kelly

I suggest you start with the largest ones. I've already cut all the textures 342 KB and larger in half for Demo 2. I'll do those 173 KB and larger later. I would imagine that the textures smaller than this won't have much effect. But if you are up to it, go smaller.Thomas[a href=http://www.flyingscool.com] http://www.flyingscool.com/images/Signature.jpg [/a]I like using VC's :-)N15802 KASH '73 Piper Cherokee Challenger 180

Thomas - what were your results with demo 2 by cutting the larger textures in half? Did it have a significant impact on framerates?Mike Kelly

It's hard to say. I'm still testing. There are so many variables it'll take a while to tweeze out the effect of each change. The biggest hit I am experiencing is from the automobile traffic. Unfortunately, I really like auto traffic, I think it really adds to the "life" of the sim. So I've been playing with different AI settings more than anything. The time limit on the demo is a pain, too. But, when I get a chance, I'll try to develop and perform some tests to specifically test the effect of the smaller textures.Thomas[a href=http://www.flyingscool.com] http://www.flyingscool.com/images/Signature.jpg [/a]I like using VC's :-)N15802 KASH '73 Piper Cherokee Challenger 180

If I set those two lines to zero I wonder how they differ to the line that saysAUTOGEN_DENSITY=0Bill

Seems better to do this rather than modifying bgls.You even get scaling. Min/Max values, etc.The link eludes me, but it really needs to get pinned.MHO,bt

Regarding:TERRAIN_MAX_AUTOGEN_TREES_PER_CELL=4500TERRAIN_MAX_AUTOGEN_BUILDINGS_PER_CELL=3000I 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.exe2. 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.