Morning all,I've recently suffered a new problem in fs9. When flying in the north of Finland in the default Beech Baron with FISD's scenery installed, all would be fine. Their scenery I recently updated and all looked very good with very smooth framerates.Yesterday I decided to download and install Chris Willis's FSW clouds. All looked rosy initially until I touched down after doing a flight from EFRO (Rovaniemi) to EFSO (Sodalhyka). 3 feet above the ground my frames went from a smooth 20fps to very stuttery and persistent 8-12fps. 'Oh great' I thought my anti-virus had kicked in and began a regular scan of the hard drive. But no - there was no hard drive activity assiciated with the stutters.So I taxied around EFSO with the stutters and then took off again - in the air the stutters were gone - smooth as silk. So I thought hmmm - it must be the new clouds. I cleared the weather to blue skies and the stutters had gone. "Bingo!" I thought, so I brought the default clouds back into the /textures folder and started fs2004 again at EFSO (checking the dates in the folder to ensure no new textures remained). "Noooo!" The stutters were still there on the ground only but never in flight. "Right!" I said, let's go to another airport and try to repeat the problem. So I went to Oslo Gardermoen - a long time regular of mine. Again I had stutters - "what's going on!!??".So I tried a default airport, ahh it's looking good - no stutters. Back to Oslo, smooth as silk. Back to EFSO - gaarhh! All the time, the plane is stuttery on the ground, but never in flight. It seems a visit to EFSO seems to "contaminate" my flying - when going to my next airport. If I start fs2004 in another airport I seem to get no problems, but in EFSO it's borderline un-taxiable (but perfectly flyable!!).So two questions:1. Has anyone else experienced this?2. Does anyone know how to fix it?

H Anthony..do you have a force feed back joystick...? I had a similar problem and got rid of it by disabling the FFB part of the joystick via the optionsmenu..b rdgs Dick=

Or onboard sound card. Ground = sound effects + engine. Try turning the sound off to check.Allcott

Thanks for the responses.I don't have a FFB Joystick - just a CH Flightstick that plugs into my game port.Regarding sound, would the fact that stuttering is also a problem in Slew Mode make a difference? Slew mode is silent, so would that be the functional equivalent of turning the sound off?Some further anecdotal evidence. EFSO is certainly a big problem. Other airports in Finland also display the ground only stutter but it's less intensive and also the frame rates start ok - they just decay progressively. Away from Finland there is no problem so I'm beginning to believe that there's an issue with the addon scenery. However the fact that it's a ground only problem is truly bizarre.I believe Gary Summons with his UK2000 scenery had some stutering problems with the release of Part 6 - I believe he traced it back to information in the headers in his BGL files.

Anthony..I downloaded EFSO.. flew there and had no problem..Strange problem you have here..b rdgs Dick=

Do you have some landclass in the area? Once in awhile landclass can slow things down. I tend to live without it.Lee

Yes I have finnclass and finnterrain installed.Strangely it only occurs with cloudy weather (not clear weather). If you select a weather theme like "grey and rainy" see what happens.I have a feeling that it's their terrain file that's the culprit rather than the airport. I've been designing terrain and landclass for NW england and I find it's objects associated with roads that cause problems (e.g. lots of autogen street lights).I'll email FISD and ask whether they have a problem at their end.