The last trial to isolate the FMC problem(s):

1. No problems with SID's although in some cases (KDFW) you do not have all alternatives. Is there any limiation? Faulty AIRAC?

2. When you choose a STAR by selecting ILS RWY XX your speed and altitude keeps the same (for example: .801/FL310) and all waypoints to arrival disappear. This happens to many airports (like KDFW) but not with all of them (like MMMX)

3. One would say - this is an AIRAC problem, report to Navigraph. And I will, but their database is the same for many developers. It would be nice to hear some official statement from CS developers.

4. As ILS approach is useless in many airports, you just have to choose RWY XX to land. That would be ok but sometimes you need to insert some extra waypoints so aircraft can do a smooth turn at enough distance to have time to align correctly to runway (we are not flying a C172 here).

5. When you insert extra waypoints, FMC becomes  crazy and modifies all waypoints altitudes and speeds, changing to CRZ flight level and speed.

That's all for this moment. I'm deeply disappointed because this aircraft has great characteristics for the kind of flight I like to do.

Regards

Schmid