Within the last week when flying online after about 1.5 hrs frame rates start to deteriorate until eventually the sim freezes. Never had this problem before.Ok, what changed? I installed the FSGenesis update for the rockies and Southeastern US. Haven't had a chance to uninstall them but will and see if that solves the problem.Has anyone else suffered this malady after installing the above programs?

Hi Lamont,Check for a landclass file in a scenery folder with an empty companion texture folder. Such a situation will create a memory leak. When all your memory is used up, the sim shuts down.-------Justinhttp://www.fsgenesis.netHigh Quality Scenery for FS200x

Hi Justin,Thanks for the tip I'll check my system.

Found one scenery folder with an empty texture folder at the following location:C:Program FilesMicrosoft GamesFlight Simulator 9SceneryROAD2004Under ROAD2004 there is a scenery folder and texture folder which is empty. I believe this is from USA Roads installation. I know many simmers use this addon and frankly I'm surprised to find it.I'll delete the texture folder and report back. Again thanks.

Justin (or anyone else): Forgive me but some of this is greek to me. I have several of your 38 meshes and the American Data Product. I found a folder called ...Flight Simulator 9SceneryBASE. It has a FSGDocs folder (logs of yours) and a Scenery subfolder but no texture folder. The logs refer to your US Landclass. Is this the kind of thing you are referring to? Only one other folder here, ...Flight Simulator 9ScenerySame, has a Scenery subfolder but no texture folder. Have no idea what that is.

Hi,No, that FSGDocs folder will have no effect on anything. It just tells you what version of FSG products you have.When there is a landclass BGL in a scenery folder, the terrain engine by default looks first for a companion texture folder for it's textures. When it doesn't find any textures in an empty texture folder, it then looks in the default texture folder and finds them there. This process of looking in the first texture folder consumes memory, which the engine doesn't release--a memory "leak." When the memory bucket is empty, the sim shuts down.If the engine finds a landclass file in scenery folder >without< a companion texture folder, it goes directly to the default texture folder to find them instead. This process doesn't create a leak and the sim will keep running unimpeded by diminishing memory resources.So care must be taken when installing landclass files to avoid the first situation above.Hope this helps -------Justinhttp://www.fsgenesis.netHigh Quality Scenery for FS200x

>So care must be taken when installing landclass files to avoid>the first situation above.>What happens if a scenery installation puts a landclass file inside a scenery folder (which also holds the relevant scenery) - and this scenery folder has an associated texture folder.Also how do we find out which BGL files are "Landclass" files and which are scenery files?REgards Barry

Hi Barry,You best bet in that case is to contact the developer and ask.-------Justinhttp://www.fsgenesis.netHigh Quality Scenery for FS200x

Hi Lamont. What Pilot-Client software are you using to fly online?kevin

>Hi Lamont. What Pilot-Client software are you using to fly>online?>>kevinHi Kevin,I'm using SB3. I know there's a problem there also that's been addressed on their forum related to a possible problem with certain versions of FSUIPC. I took their advice and rolled back to 3.45 and it seemed to help. However, I still want to test it further after deleting that empty textures folder.

Hi Lamont,my problems occured with the 3.45 version installed,althought I am not convinced that FSUIPC has anything to do with this particular issue.I am NOT an expert however.I wish you the best of luck with your testing and if you find positive results please post them on the SB3 forum.If your testing does not yield the desired results and assuming you wish to remain with Vatsim,may I recommend FSInn.It's an excellant piece of software with many really good features.After several months of struggling with my SB3 stutter problems I swithched and have'nt had a problem since.kevin

Kevin:I will know more tonight as I've got a VA group flight going so we'll see. FsInn is a viable alternative.

Thanks Justin. so, basically, empty texture folders are bad, missing texture folders are okay. anyway, thatnks again and thanks for the wonderful product (and by the way, I'm just up the road from you--in state college)

As promised, I'm reporting back. After removing the empty texture folder and rolling back to FSUIPC 3.45, I'm happy to report problem seems to be solved.Last night flew a flight using PMDG 737 from Portland to Goose Bay and framerates stayed steady along with a smooth sim. There were no apparent stutters or degredation in FPS. Flight duration was 2 hours.I might now try returning to FSUIPC 3.5 and see what happens.