I'm using XP12 Public (via Steam)

Anyone else having extreme performance drop when using X-Codr AEP package?
My CPU frame time is slowly increasing in the sim, while FPS drops to single digits.
CPU itself is running at 30%/core in Performance manager, so I have plenty of overhead.

This goes away if I disable the Custom scenery entry for "AEP_Overlays". But off course that's a major "USP" for the product itself so I'd rather have it enabled.

I also have all layers of Simheaven Europe enabled, so I wonder if these two addons do not play nice together?

X-Organizer shows no errors in my "custom scenery" layering.

I see something like that occasionally. Sim becomes unusable. When it happens I pull up the microprofiler window and see tons of VRAM processing activity. Hadn't ever correlated it w/ AEP though, so that's interesting. It's always temporary too. Lasts maybe a minute on my system then goes away.

Yes, I have lower FPS with AEP. Noticeable, but not extreme. Maybe 20%, but I have not tried without for some X-Plane versions. It is still worth it for me.

Maybe some other add-on that together with the AEP_Overlays leads to a problem?
Try a default aircraft – I had crashes with AEP+Airfoillabs King Air 350 for example. The AEP developer has been very helpful in getting that worked around. I think it is worth letting him know about your problem.

I run it and haven’t noticed any issues one way or another.

Runs good on my setup, but it would be nice if we had an easy way to disable vehicular traffic at the airports.

On 10/9/2026 at 2:59 PM, flightwusel said:

Maybe some other add-on that together with the AEP_Overlays leads to a problem

The issue is still present even when running default C172, I lose a large chunk of my frames.
As soon as I lift off and additional scenery is loaded into the sim, frame creep occurs, slowly suffocating CPU frame time performance.
Thanks for the replies, I will contact the author of the addon and try to find a cure.