After flying for 45 mins or so, my framerates are down to 6.5fps. I can then shut down FS9 and restart with the exact same scenario, a/c location, weather, etc. and my frames are back up to 13fps. I know this has been brought up before but it appears as though MS has never acknowledged the issue. I'm using a P4 1.6g, 512ram, GForce FX5600 Ultra, SBLive!, 40gig Maxtor Ultra ATA, etc. I use PMDG's excellent 1900D, PSS Dash 8, and Opensky's CRJ 95% of the time (with the CRJ being the framerate winner, hands down!) I also use default scenery.CH

I've heard of this problem but never encountered it myself. I guess I don't play FS long enough. I have an incredable short attention span... What was I saying. lolAnyway, one possible cause that sticks out in my mind that I heard was memory overheating. With RAM getting faster, the more you push it, the hotter it gets and preformance drops. This is just a hypothesis on your problem. If you have lower speed DDR ram or PC-133, than this isn't the cause. If this is the problem, you can get memory coolers for about $7US.

Do you have XML and Vector autogen enabled? They have a bug which is known to cause this problem. You can disable them by opening the folder named "Autogen" and renaming the file "Default.xml" to "Default.bak", and then editing your fs9.cfg file and changing the line "TERRAIN_USE_VECTOR_OBJECTS=1" to read "TERRAIN_USE_VECTOR_OBJECTS=0"You will still have the standard autogen buildings and trees, but this will disable the chicken restaurants, gas stations, churches, streetlamp posts, highway signs, and a bunch of other stuff you can't see once you're over 1000 feet AGL. I didn't even know there WERE streetlamps and highway signs until I was taxing around roads trying to find my bouse.Dan

If you havn't done it yet, go into the FS9autogen directory and rename or move the file default.xml

Thanks, I will try that tomorrow. That's good news that there's a cure!CH

I have another default.xml that excludes these reastaurants etc.It was made by someone and uploaded but I cannot remember the filename or the author.Kyprianos Biris :-cool[link:avsim.com/greece/hvacc]Hellenic vACChttp://vateud.org/images/vatsim-eurs.gifhttp://vatsim.pilotmedia.fi/statusindicato...tor=OD1&a=a.jpg

Hi,I had a similar problem with memory leakage, it turned out to be a landclass scenery file that was in a directory with an associated texture folder.So I moved the said landclass file to a folder with ONLY a scenery folder and NO texture folder, my problem was solved.CheersDan.

>I have another default.xml that excludes these reastaurants>etc.>>It was made by someone and uploaded but I cannot remember the>filename or the author.>>>Kyprianos BirisI wouldn't doubt if you're using the same file I always use.... it's filename in the Avsim library is: fs9xml.zip, by David Bailey.Cheers,Jim

You can also program a function key using the FS9 key assignment menu to purge the scenery cache. It is a listed function, but choose a key not being used for anything else. This will "reset" your memory to a startup condition.MDavis

In a thread a week or so ago, someone also suggested a memory freeing utility, which has been working great for me:http://www.analogx.com/contents/download/system/maxmem.htmAlso, using ken salter's FSAutoStart to unload a lot of services and other running applications from memory has helped a ton. And I thought 768MB was a lot of RAM - not with FS9, that's for sure!Best,sg

I had the problem too for a bit but now I never go long enough without a CTD for it to be an issue. :-(billg

are you talkin' about the "refresh scenery" function on the assignments page? if so, how did you figure out it actually purges the scenery cache. all it does for me is reload the objects currently in the cache, models, textures, etc. not one missing... or is it me who's missing something?:)thanksvilk

Assigning a key to Refresh Scenery in FS2004 won't cure the Autogen problem. Accumulated autogen is not cleared that way. You can purge autogen by turning autogen Off, then turning it back up to whatever you were using. Even better, just delete default.xml and disable vector objects - you'll double the framerate. Editing the default.xml to kill the objects you don't like will also work, but you'll find that you have to disable a LOT of stuff to really make a difference in the sim. It's a shame Microsoft is too lazy to fix this bug, I kinda liked them red barns and fast food houses.In the attached graph, you see the results for no Default.xml, "full" default.xml and edited Default.xml to remove some objects.http://home.swipnet.se/~w-84952/Jimmi/test/log2.gif

How do you disable vector objects?

>How do you disable vector objects?Sigh. Read the threads, people."Do you have XML and Vector autogen enabled? They have a bug which is known to cause this problem. You can disable them by opening the folder named "Autogen" and renaming the file "Default.xml" to "Default.bak", and then editing your fs9.cfg file and changing the line "TERRAIN_USE_VECTOR_OBJECTS=1" to read "TERRAIN_USE_VECTOR_OBJECTS=0"