Thanks,
Ok what we get:
- Just 2 users (you and bmanvi who is out for some reason). So there's no serious problems in the 767 that could affect mass user.
- The fact that the 767 exterior model does cause fps drop on your PC.

We believe the 767 exterior model complexity pushes some limits of your sim and/or PC setup. That Prepar3D.exe crash is an extra proof of that.

Possible solutions:
- System and all drivers update
- Performance check e.g. https://www.userbenchmark.com/Software
- P3D and/or windows reinstall.

Before that I'd try the 767 on another PC.