This happens with FS9 and the FSX demo. A few weeks ago I noticed my FPS randomly going to half. In other words, I was getting around 25 FPS one day, and the next, I'd be down to 11-12. I figured out that it was Virtual Memory related. I switched to System managed page file (it was set at 2 gig permanently), and my FPS went back up. Well, the next day it was half again.SO...I disabled the pagefile altogether...it went back up. NOW, it's down again. I basically have to change the pagefile every time I want to play FS9 (or FSX...the same thing happens to the demo). Doesn't matter if it's system managed, off, or user set...as long as I change it occasionally, my FPS goes back up...but it will eventually go back to half again.What the bloody #### is going on?Using XP SP2AMD 64 3200ATI X16002 Gig RamSB Live 24

Sounds like you might have some rogue program chewing up RAM. You don't indicate if you are rebooting between runs or not. Quite possibly some spyware going to town on your system. Also, when was the last time you defragged your drive?You shouldn't have to keep changing the Page file options to make it work. And with 2GB RAM it shouldn't be swapping to disk much anyhow.--2002cbr600f4i

Yes I have to reboot between runs. And I defrag religiously. I downloaded Ultimate defrag and have run it 4 times. I used AVG to see if anything came up but nope. And I also use EndItAll to kill any background processes.I like to run a VERY clean machine. That's why it's so bizarre.

Just delete the file after you have set pagefile to 0 the reboot and set system managed probably a corrupted pagefile ;-)Andr

Already tried deleting the pagefile. Even defragged after I deleted it. Then when the frames got killed again, I set it to system managed...then defragged again. It ran great for awhile...then went to garbage again after a few hours. The FPS doesn't degrade DURING gameplay...only after I quit and come back later. I am running other programs in between flights, but nothing odd (other sims, music, firefox, etc). I tried just re-booting without messing with the page file, but it didn't help. I don't understand.Very strange. And annoying.And sorry if I didn't post in the "Hardware" Forum. Didn't know if it was considered hardware or software... :)

>Already tried deleting the pagefile. Even defragged after I>deleted it. Then when the frames got killed again, I set it>to system managed...then defragged again. It ran great for>awhile...then went to garbage again after a few hours. The>FPS doesn't degrade DURING gameplay...only after I quit and>come back later. I am running other programs in between>flights, but nothing odd (other sims, music, firefox, etc). I>tried just re-booting without messing with the page file, but>it didn't help. I don't understand.>>Very strange. And annoying.>>And sorry if I didn't post in the "Hardware" Forum. Didn't>know if it was considered hardware or software... :)>You could also choose to rebuild the pagefile automatic when reboot...Looks like something is corrupting your pagefile...Is the file at drive C? or where your primary partition is?Andr

It's nothing to do with the pagefile, you aren't getting the program fully unloaded from memory when you close it down. If you then try and start any other program you can leave huge FSX files paged (in memory) as the OS is trying to think ahead and assumes you will still want those filesSolution one is simply to run a memory reclaimer, FSAutostart has one, or solution two: Wait after you shut down FSX for the page file to return the space to the system. If you think about it, FSX takes several minutes to load. It follows that it also takes some time to UNload all those RAMmed and Paged textures!Just watch how the hard drive light responds when you quit FSX.Allcott

Excellent! Thanks for the advice gents. I used to have a mem manager installed, but can't remember what it was. I'll do some research.