Hi:I recdently reinstalled. I do not know if this was going on before, but I just a noticed a light microstutter when ATC chimes in. This only happens on the first message of any new responding frequency. I have full accel in dxdiag sound, and I have an Audigy2 installed. I defrag regularly. Any one run into this and any known solutions?Many thanks

Set your DirectX sound accelerator to "Standard" or even "Basic." This is a known problem and the fix worked for me. R-

Thanks

Tried all accel settings but no help. I edited out a couple of redundant sound settings in the cfg and that helped so that i no longer have a a micor stutter on every new transmission. Now, when starting at sea tac no stutters, but when contacting another field a microstutter when atis first responds, when tower first responds etc. But no more stutters when contacting at any time during the session. I have ltcy set to zero, disabled on board audio. This is driving me a little nuts, so any help or ideas would be greatly appreciated.Thanks

Hi Hassata, have you tried the 'PanelAsTexture=0' line in the fs9.cfg's 'display' department? Maybe it's IRQ sharing? Good luck and kind regards Jaap

JAAP: You are a gentlemen and a licensed FS9 doctor :). This has been driving me crazy following reinstallation of a new MB. 2 days of tweaking with no results, but your suggestion has cleared it right up! Many thanks and best regards,

Hi Guys:Well, I spoke too soon. The problem is back (never really went away). I have searched this and the other site, but have found no fixes. Believe it or not, this is a list of some of the things I have tried since first posting:All dxdiag sound setting;Many different video and sound ltcy settings;Completely reinstall with all addons (better part of 2 days :))Moving to another HD;Moving Page File;Physicall moving sound card location;Disabeling sound card;Enabling on board sound.All with no luck. I still get a pause when atc transmits from a location for the first time. If I exit FS9 and return without rebooting, it appears I do not get such stutter from those same locations. I think the stutter is happening when the wav file is being cached. Anybody know where it is getting cached to, or why there would be a stutter?The stutter is ver slight, but all the more noticable when I reconact the facility and all is smooth.This is drivingme nuts (and I don't know if it occured after installing the new MB, or if it was always there and I have just noticed. Any help would be greatly appreciated.Thanks

I have noticed that the hard drive light comes on whent atc transmits. There is a microstutter associated with this during the first transmission, but not subsequent. I've now tried disabling/enabling dma access; disabling/enabling read/write cache and everything else I can think of. I've aslo uninstalled any other pci cards that may be causing a conflict.I think that this is cahing of the transmissions from each facility during initial transmission. I've tried looking for the wav files but could not find the. Anybody know where these files are, or how we can pre-cache or disable caching?CAn anybody also confirm that there are getting absolutely no micrstutters during intial transmission?Thanks

I know you have tried the onboard sound but for me the answer was sound card drivers.Andrew Brownhttp://www.gordiusfs.pwp.blueyonder.co.uk/

My take is that it is at some level system dependent. I have the same issue, but otherwise FS9 runs very well, very smoothly with phenomenal (to me) image quality on my GF6800GT/OC. I went round and round with someone here with the argument that when FS beckons a particular .wav file, that there is a cost, the significance of which I would guess is system dependent, associated with writing it to ram for the first time after it is called, and then of course routing it thru your Audigy 2 for processing. This would be compatible with your affirmation that when the particular .wav file is played subsequent times there is NO microstutter, since the file was already loaded into ram. If this is in fact true, then one could guess that it is the drive-access component that imparts the biggest penalty in terms of microstutter. I would also have to say when I ran perfmon.exe after setting virtual mem to 2mb max/min, one could easily see the physical drive where I had my swap file assigned was no longer being accessed. When I had the recommended swap file of 1,500 mb set, perfmon showed regular drive access to the swap file drive, thus proving setting my swap file to the min allowable translated to no drive access to the drive where the swap file is located on my sys. Since then, I would have to say flightsim smoothness is the best overall that I have yet experienced. This prompted me to purchase my 2nd GB of ram.NoelIf anyone has a more plausible explanation, I'm game. Noel

I also thought it might be driver related, so I went back and installed everything from old Audigy drivers to the new beta ones. The microstutter was not however cured.I therefore think that it is precisely the wav file being written from the hd to ram as indicated by Noel. BTW I can exit FS9 after the particular station transmits, then renter and the stutter would still be gone. This played havoc with my testing because I would exit, adjust bios or other parameters, re-enter, and think I had found a parameter that was having an effect :(.Some other things I have tried to address the issue include reinstalling onto my faster SATA HD and also moving the page file to such drive, but still no luck.I do have my page file set to 1500, and will now try 2000. Thanks guys.

I had postulated a likely fix for this drive-access related microstutter, were this indeed the case, and that fix had to do with pre-loading all .wav files that can potentially be accessed by FS during any session into ram via a ramdrive. As long as you have the free ram, which if you have 2GB you do, then it may improve the situation. I have never investigated if this is indeed a possibility from user-accessible/editable .cfg/.ini files in FS9, but I don't think it is after a quick check just now. Noel

Interesting stuff Noel. I have thought about that before and it makes sense. Windows does not know what wav files you are going to play. Once loaded into ram, performance is good.JimCYWGMay have to go to 2 gigs. What is your swapfile set to?Also in one place you say 2 mb and in another you say 1,500 mb.One is 2 megabites and the other is 1500 megabites.Is that correct?

Actually what I was trying to describe was what happens when I set it at 1500mb vs 2mb. In the former the drive that has my swap file on it is accessed quite regularly during flights. When I set it to 2mb, I get no more drive accesses on the swap file drive. So, I picked up another GB of ram and leave the swap file at 2mb. I decided to do this when I had out of mem errors with complex aircraft WHEN swap file was set to only 2mb with only 1GB of ram installed. Since going to 2GB of ram, I don't have out of memory or CTD issues when running the swap file at 2mb. Noel

Increasing swap size to 2MB has helped slightly. I have the swap file on the same (faster) drive as FS9). Does it make more sense to keep it on the Windows drive?I tried looking for the wav files but could not find them. I think they may be compressed. If so, would decompression help?Finally, I found a wav cache switch in the cfg but adjusting between 1 and 0 had no effect for me.