Well, that was entertaining.
Sounds like you're doing something wrong with your autolandings. Couldn't tell you what. I've done 10 or so in the last week with zero hiccup.
I don't have much else to say with regards to everything else, though I sincerely disagree with you on the FMC. Do you have an old video card or something? With as many YouTube videos as are out there for this aircraft, either you did poor research or you're slightly misinformed as to a number of things with the systems. This isn't some modern era NG (or even 767).
Menu stuff is completely subjective. We'll wait for more complaints on that before going further.