Which XBox system are you using? I used to get CTDs pretty much every time on my series X with KJFK, but I just tested this out with the standard A320, the PMDG 737, and the LVFR A330 and while I did have a handful of CTDs, they were significantly less then anything I had before (mostly because I’m actually able to fly most of the time now).
I also have loads of NYC based scenery and airports installed. This was def the problem too before, especially when KJFK was installed. But it seems to be much better than before and actually flyable now after the latest update posted on Thursday.