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0 votes
asked by (12 points)
FPS decreases with increasing altitude past FL250, clear weather, any aircraft with a clean X11, I’ve even tested it with sliders all the way down and it still happens, it’s been happening since X11 1.30 (And current X11.40b6).

I’ve tried everything, other users in the Zibo mod forum have confirmed this same behaviour when passing between FL250-FL300+ onwards, tested with multiple aircrafts.

What is causing this odd behaviour?

2 Answers

0 votes
answered by (28 points)
do you have your FPS datalog? what's the frame time for CPU and GPU? and what's your GPU Memory usage?
It's possible you have too many world objects for your set up
0 votes
answered by (5.3k points)

Hi 320ski,

I am not from Laminar Research; just a flight simmer from down under.

The XP11.40b6 (beta) version you have is well out of date.  The beta versions went to 11.40b12. which has now been officially released as XP11.40rc2.

Update your system to the current version to ascertain if your problem still exists.

If it still does then I would also suggest you attach your log.txt file so that others with a greater knowledge base than me may be able to determine what your problem is.

If you don't know how to attach the relevant file have a look at the following link from Greengolfer15 found at

If you are not a long term experienced X-Plane user you should stay away from Beta versions as they can cause problems with your system