To update on this, Just Flight report that only a very few people have this issue and they are working on a solution. I will let you all know if there is a fix.

With the much anticipated twin from RealAir. With that I'll be happy. Which is good because I don't see an explosion of FSX add-ons anytime soon...

Gemma have you tried disabling the 10m mesh? ie just unticking it in the scenery library and setting the mesh back to 38m resolution. Also have you tried the texture bandwidth multi=400 tweak?

I've tried unticking the mesh in the scenery library, I've also installed just the photo scenery without the mesh and set various resolutions.I've added the following tweaks[MAIN] FIBER_FRAME_TIME_FRACTION=0.50 [DISPLAY] TEXTURE_BANDWIDTH_MULT=400 This has not improved the performance, there are definite issues whilst running the photo scenery that are not there when it is disabled in the scenery library or unistalled but thanks for the suggestion.

Another tweak I have seen suggested to ease the stutters is to increase the texture resolution from 1m to 7cm seems illogical but did give me some improvement.Chris

Hi Chris,Just tried increasing the resolution to 7cm, it hasn't cured the stutters, but I think there is a noticable improvement, i.e. the stutters are less intrusive making it a bit more flyable.I'm getting sound crackling and popping during the stutters, (my sound isn't great at the best of times it crackles and pops when I change throttle settings etc) does this give any clue to where the problem might be? (I've tried changing the sound settings in DX9.0c without improvement)