After general tweaking and messing around i come to this. At Heathrow with most settings to the far right and plenty of AI i get constant 24.8 FPS in the default 737. Now i switch to the PSS Dash 8 and all of a sudden im getting as low as 18 FPS. Can anyone tell me if this can be fixed?System Specs:Intel P4 2.66 Ghz512 Mb PC333 DDRGeforece FX 5600 256 Mb with 67.22 driversWindows XP ProFS9.1 with FPS locked at 25Thanks!Regards,Lee

That's NORMAL (payware panels and models use more CPU than default planes, becuase they ARE more complicated). There's no "fix" to it.

hehe, I can remember when I was a "noob" (not suggesting you are) and one of my first posts was asking why everything seemed so smooth until I started to descend into KSEA, then it would start to get really choppy. At the time, I didn't even know what fps were. And my idea of landing was to push the joystick forward until I saw the end of the runway, none of this trim, flaps, and throttle control stuff for me, hehe.But some of the payware planes are better and worse than others. And you can "fix" some of them by changing the textures from 32 bit to dx3(sp?). I'm getting fantastic fps from the df 727, but some others that don't seem as detailed bring my system to its knees. billg

HiMy system kinda sucks and what I normally do with lots of aircraft and sceneries is use a freeware program called dxtbmp to reduce the textures involved in size and maybe remove reflections and change texture type to more compressed ones (eg. dxt1opaque). You will lose some image quality and the more you compress the more you lose (but on my 1.3Ghz Duron system at 800x600 I could hardly see much anyway!!).Here's a post I did a while ago about using dxtbmp to change ai aircraft textures to dxt1opaque, losing the reflections (and hopefully halving their size):http://www.flightsimnetwork.com/cgi/dcforu...rum=DCForumID21With normal aircraft I normally try and get the external texture folder size so that it's around 2-3mb in total (similar to the default cessna, 737 etc.). If it starts at around 25mb this can normally be done ok by:- Open a texture with dxtbmp- Go to 'image' --> 'send to editor' (normally mspaint on my 98se setup)- In mspaint (or other editor) reduce image size to 50% and save (in paint it's 'image'-->'stretch/skew' and 50% on horizontal/vertical axes)- Back in dxtbmp go to 'image'-->'reload after edit'- Hopefully the image is now half size in dxtbmp- Go to 'file'-->'save extended image' and save the file over the old one as 'dxt1 opaque' for smallest size possible (although without reflections)- Redo this for all the files in the external texure folder (this may take 20 mins.)Backups of any texture folders should be made first as things may not be good or what you like (and some textures like props and windows mess up as dxt1opaque and other formats). You can also reduce size of panel textures in the panel folder (although most of these main panel bmps etc become unreadable / ugly if reduced much though - I normally do a little just using mspaint (they seem to only work generally as normal images so dxtbmp not needed)).This is a seriously long post but I hope it helps a little and fps improve (just please backup anything first).Just ask if you use this and have any more issues,Pierre