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An odd manifestation of “stutter” in FS9

PRB

PRB

Administrator
Staff member
I just installed FS9 on my new computer. It’s very nice, but there is one tiny problem with FS9. Every time I land a plane, at the exact moment the wheels touch the runway, FS9 hangs for about 0.25 seconds. Not a long time if you’ve made a perfect landing in a B-24, which is not likely to go anywhere after the wheels thump down on the runway. But if you’re in the Gnoopey P-47, or the John “Bomber_12th” P-51C, that quarter of a second can be a life time! By the time I’m out the other end of the time warp, I’m 50 feet in the air again! It’s very distracting.

It doesn’t matter what plane I fly. All of them do it. I’ve never heard of this particular problem in FS9. I’m hoping somebody here has, and more importantly, has fixed it…
 
Touchdown uses two drags on the comp, sounds and effects, try reducing the quality of each in turn to see if things improve?

Jamie
 
I've been having a similar problem when the real wx is on. FS has been going into a slide show at touchdown. Only been noticing it with my favorite Spitfire though. I've been chalking it up to my old comp. You've got me wondering now.
 
JDT: Thanks for the troubleshooting tips! I never thought of trying to tune down some of the sliders (duh). I tried sound quality, but my old computer was set to high on that one, and I wasn't surprised to find it had no effect. But then I tried others. The one that seems to have fixed it is AI traffic density. I had it set to 100%. I set it to 50% and it hasn't happened since. But then I set it back to 100% and it still didn't stutter anymore. Can't think of how AI traffic density could have caused this. I have it set to 80%, just in case.

Willy: In my case the frame rate was just fine all the way to touch down. The sim just "froze" for an instant right at whells on deck. But since I tweaked on the AI traffic density, I can't make it do it anymore!

Fingers crossed!
 
Been running into a lot of clouds and fog lately with Real Wx. I suspect that's my problem but I've already got the detail level on them turned down. It's been bad enough that I've been switching to Fair wx on approach lately.
 
I have the same problem sometimes, not always. FS freezes for a split second when I touch down. Havent been able to find a cause or correction yet.
 
With me it's a slideshow that lasts about 1-2 seconds on touchdown. Just enough to allow me to really muck up a landing.
 
Tried it with a dcc P-38 tonite instead of the AH Spitfire. Didn't notice a bit of slideshow on landing although I was a bit busy trying to land with one engine at full throttle..
 
PRB said:
I just installed FS9 on my new computer. It’s very nice, but there is one tiny problem with FS9. Every time I land a plane, at the exact moment the wheels touch the runway, FS9 hangs for about 0.25 seconds.
Click to expand...
I wouldn't call that a tiny problem!:focus: Does that happen at different bases?

Cees
 
Yep. Every airport (that I've landed at so far), any plane that I've tried, both stock and add-ons. It seems to do it less often now, and less severely. They only thing I've changed is the AI density rate, and that doesn't make any sense. If I figure out the culprit, I'll post it here!
 
Update:

I’m 92% convinced the culprit is the touchdown sounds, just as JD (TinBalls) tried to tell me. I did try reducing the quality of the sounds to minimum in the settings area, but that didn’t fix the problem. The fact that it was intermittent led me to all sorts of false leads, like the AI traffic density, which has nothing to do with it. Then Mike (a.k.a. “MM” here) sent me a comment by one Steve Lacy, specifically about touchdown sounds. He basically said what JDT said above, but also suggested deleting references to them in the sound.cfg file, as a troubleshooting step, something I didn’t think of. That worked. I’ve done many flights now, testing this latest theory, and while the touchdown stutter doesn’t always happen with the touchdown sounds specified in the sound.cfg, it has yet to happen once with the touchdown sounds “de-specified.”

The next question, of course, is why is my new computer having this issue with sounds? While doing flight tests, I noticed other sounds also produce a stutter (sometimes). Flaps sounds, GPWS babes telling me “approaching minimums!!”, speed brake sounds, all have, at various times, produced a similar stutter. This never happened on my old slow Windows XP machine… Sounds drivers, mayhap?

New Rig Specs:

MB: Asus P6T Deluxe (LGA1366)
CHIPSET: Intel® X58 / ICH10R
CPU: Core i7 920 2.66Ghz (LGA1366)
RAM: 8 GB DDR3/1333MHz Non-ECC Non-Registered Memory Module
VIDEO: NVIDIA 9800GTX+ 512MB Dual DVI (PCI-E) Video Card (2)
OS: Microsoft Windows Vista Home Premium 64-bit
SOUND: ADI® AD2000B 8 -Channel High Definition Audio CODEC
 
I see similar symptoms on my rig too. When I'm starting a flight, my rig hangs for a short moment when I cross from taxiway to runway. But, if I exit the runway and then reenter, there's no stutter. Everything runs fine (except for the usual framerate drop in heavy cumulus cover) through the landing phase. Then, once I exit the runway, I get the same short hang, and again, only once. It also makes no difference which view I'm using. With my symptoms, there's no sound associated with the transition, so I suspect it's something deeper in the Sim. Luckily, my hangup happens during a non-critical part of the trip!
 
i don't have vista, so this advice might not be valid. But worth a try :)

Have you checked which processes are running? Your problem sounds like a classic case of caching and indexing. Again, i don't know which process Vista loads, but in XP, the indexing service is extremely system heavy. Turn this service off asap. Another heavy process is system restore. You can turn this off if you happy w/ your PC and not installing new things all the time.

Since you don't have a FPS issue, and only stutters during file loads (sounds in this case), it has to do w/ file accessing. If the above does not work, check the following:

- do you have any anti-virus software running in the background. If so, they are scanning each sound file before it goes into memory, and this can cause a micro stutter. I suggest NOD32 for the lowest system use (i have it loaded all the time, but never noticed a problem). I used to use ZoneAlarm's antivirus, and it caused major stutters in FS9

-is your Harddrive setup correctly? Do you have a high-RPM HD (15,000+rpm)? Is so, make sure it's setup in Device Manager. If you have a raid-system, also check to make sure all communications between HDs are working.

-Are you using the built-in sound card on the motherboard? Or a PCI card? If the latter, make sure to disable the default card on the MB. If you are using the MB one, install the latest driver and then check the settings. Some built-in cards rely on the main CPU and RAM for its own use (unlike an addon card which has its own CPU+RAM). If it is sharing, check the priority and make sure it's not hogging too much. I highly recommend getting a PCI sound card if you are using the default MB one. This will give your CPU a big relief and you'll definitely notice a difference. FS9's sounds are all loose (not packed into one file), so loading of individual files is very CPU intensive (needs to search, check, load, execute for every file).

- disable any other process relating to HD access or file checking. Examples include the itunes\quicktime services, winamp services, spyware watchers, etc

with your system (if setup completely optimized), you should be getting butter smooth 50+fps all the time, w/ all settings maxed and 100% AI, and in any weather.

hope this helps

-feng
 
If you have a sound editor, point it at the sound file of the plane that causes the most problems. Then look at the individual wav files, I have found some have various sample rates, some are stereo and some are mono, also found various resolutions, 8, 16, and 32 bit. Seems a little much to ask of FS9 to sort this all out without stuttering. If you will use your sound editor to convert all the wav files to one format of your choice I think you will find things run a little smoother.
Most sound files are fine such as those made by the pros, but there are exceptions that need fixing. :ernae:
 
Intresting Terry..... What and where might one find a sound editor?
 
I also have been having problems in vista
my screen goes black for a few seconds when changing views
fsx is fine fs9 is not well sw3 and gw3 are not either
H
 
I have this ongling nagging stutter that for the life of me can not figure out...I getting ready to set up AlricityPC and shut down all services..

Went into task manager and shut down everything with my name on it,but it still stutters...I'm getting tired of redoing the config with the same results..So i'm starting to think its not the config,it must be a service or something....

Maybe I'll kill onboard sound and see if that helps ....





Thanks for that Terry...
 
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