Hello,
Unfortunately, this issue seems to be occurring with multiple sceneries for Xbox. We as developers do not have a way to test our products on Xbox, Microsoft does all of the testing for Xbox products.
https://forums.flightsimulator.com/t/constant-ctd-s-on-xbox-with-3rd-party-scenery/478953/32
There is not a DevKit provided for Xbox as well. I apologise for the inconvenience.