During flight, periodically the screen freezes for a a moment or in some cases a few seconds, then resumes normally. During these few seconds, the plane ceases movement, the mouse is not useable, and everything freezes in its present position. This is random, not with any particular cycle. It may do it once during a flight, or several times. Seems to be most apparant immediately after ATC communication, but happens periodically at other times as well. This only appeared in the last few days seemingly out of nowhere. Seems most apparant with the Concord. Frame rates and flight are smooth and without stuttering except for these periods of complete freeze.This has only recently happened. Everything ran smoothly for months.This also happens after all other programs in the background have been snuffed by msconfig, enditall or both.3.2/800 P4 CPUP4C800 Dlx MB1G/400 Memti4600 = Dual 21"Diamond Stealth III S540 = 17"directx 9.0b45.33 DetonatorAny Ideas?ThanksRTH

RTH,Are you using M$ WX when the stutters appear. I've been having problems with ActiveSky lately so for the last two evenings, I had to use M$/Jeppeson. Saw the same effect as you described. I'm going to try it without online WX next.Larry Jones

Larry:I was useing fsmeteo. You may be right, but I sure hope not. I will test it, and if that turns out to be the problem, I will post it.Thanks:RTH

I get this on a regular basis. I believe it is caused by the sim downloading and updating the weather. I haven't used FS9 without the automatic weather update to verify this though.

HI Dean,I get the same thing using Real Weather (default FS) with the 15 minute updater.To keep it from happening during approach and landing (the critical times when I do NOT want that going on) I change my weather download to the Static one, get a final update about 150-100 miles from destination, then shut it down including disconnect from the internet. Just disconnecting from the internet with the auto update selected will not do it--causes FS to create error messages on the screen, raising havoc with the sim.Seems to be a good solution, weather does not change THAT much in a few minutes. So I can live with it. Wish there was a permanent fix though.HTH,Paul

FSMeteo or ActiveSky causes this during their download/update cycle.Noel

Well folks:I have tried all of the suggestions both on this forum and from elsewhere. No results.Going back to the 45.23 drivers made it worse for a short while. Don't really think it was the driver, but just the nature of the beast at the moment.It happens with no weather, FS2004 RealWeather, FSMeteo, or FSMeteo/VatSim.I really believe that it is specific sound file related, but am by no way sure. For example, with the PM2 Concord useing the third party sound package, I had no effect in trying to turn sound up or down under options>controls>sound in FS and the hesitation seemed to persist. However, when I aliased the default b747 sound.cfg, I still got my hesitation with this bird at times. In contrast, I just made a complete three and one-half hour flight from KJFK - EGLL and the hesitation did not show up at all. I seriously doubt that the problem is permanently over with this bird though.It does seem to be more common to some planes than others, but with no repetition that I can nail down for a decisive conclusion. Every time I think I have discovered something consistant, either the problem increases or goes away with the exception of the Cheyenne as mentioned below.Most of the time it is strictly random. It may happen every few seconds or so at random times, or once during an hours time or longer. One exception to this is that with the new FSD gmax FS2004 Cheyenne 400LS in spot plan view, I consistantly get this every nine to ten seconds for just a split second. Anyone else making this observation? In Cockpit view, it is not present as of yet. I realize that this might be a separate issue. (All we need are multiple causes huh). On one occasion FS2004 froze completely and I had to reboot (First time this has happened).Note that FS2004 is the only place I have detected this issue.I am almost ready to try something besides soundmax, but sure hate to do that after the excellent review on that package, and the fact that it totally cured all other dingy sound issues with FS2004 for me.The hunt goes on:RTH

Okay..I am sure this is not it....but, do you have multiple monitors? If so, are you in full screen mode? Running Dual's in window mode with create these pauses for some reason. You have to run in Full screen mode. Like I said...I am pretty sure you already knew that, but I threw it out there just in case.

I am having the exact same experience. Just in the last few days, exactly as you describe, after months of flawless performance. Hard drives have been error checked and defragged multiple times in past days to try to correct problem. Stutter occurs even if I delete default.xml entirely. Nothing has changed in my configuration - I haven't even installed any new addons (except some fsgenesis mesh and landclass, which I've had installed and uninstalled intermittantly - removal does not alleviate stutter)...Stutter occurs over default scenery, in rural setting (south out of KLEB runway 18 over pretty much nothing but hills and trees) shortly after takeoff using fair weather theme or real weather, or no weather...very annoying.Some details, FS and swap file are on separate volumes (in fact, FS has its own hard drive - 16GB NTFS)P4 2.26 w/533 FSB768 MB RAM PC2100nVidia GeForce4 ti4600 w/128mb default clock, 2xAA, 4xAF, vSynch on.Detonator 45.23 tweaked with aTuner.Windows XP home with all recent updates.

Those using FSUIPC will want to download the latest 3.08 version which addresses some stuttering issues when it is installed. Be sure to check the history docs for some manual fsuipc.ini entries. I use FS2K2 and it also made a difference there.

Man, I have been working this problem for a week. Got back in town from a trip, fired up the old flt sim computer. Bingo, same problem you have. Up until that point in time, I was on cloud 9 enjoying this FS9. I have accomplished the following with no real positive results. Deleted Meteo, FSUIPC, stopped using MS download weather, installed sound card, re-installed FS9 twice, re-installed Win XP Home Edition twice, messed with all sliders, etc.This morning got my old computer out of storage, AMD2400, 512 PC2700 Ram, Nvidia 4 Ti4200 128MB DDR, loaded FS9, runs good with above default settings (frame rate 20).Erv KSDFP4C800-EDeluxe, P4 3.0, ATI9700Pro128, 2 Corsair 512 DDR400 Ram.

I have this occurence as well and have simply attributed it to lack of memory as the video info is loaded as your flight progresses. I see from previous threads that most of you have more memory than I (512) so now I wonder. I do not use FSUIPC or any 3rd party addon programs other than FS Navigator. No weather programs either. And I still get the pauses. My video card is only a 64MB ATI 9000 PRO. Wonder if upping it to 128 would make a difference?This is all very interesting when you consider that I am getting between 33-35 FPS (locked at 35) and very fluid motion with my lowly 1.4 Athlon, dropping to 20-25 over the heavily populated cities.The "pause" problem is really my only complaint with FS9. Other than that, it runs VERY nicely for me.

I saw a post over at flgihtsim on this problem. The writer suggested that if yu have a video card with 128 megs ram, you cshould go into your bios and set the agp aperture to 256...don't know, still at work...and have not had a chance to try it...just another idea in the mix...Sherm

I've had my agp aperature at 256mb for the longest time. Tried reducing it to 128, back to 256 - no difference.sg

I've read a couple of posts like this and haven't been able to relate.However, I am using a piece of addon software that doesn't require the CD to be in the drive. Perhaps M$ copy protection is verifying your CD during the game? Really the only thing I can think of...and yes, before you flame me, I do have a legal version of the game...just after I busted one of my discs for another game taking the cd out of the case a million times I decided to use 'alternate' technologies to protect my investment.