I' restarted everything since 1,8 and Dragonborn. I play with ALL auto saves OFF. I had hoped that fast travel would get sorted out in the time I've had Skyrim(since 11/11/11).
It still causes crashes, graphics not to render, save file bloat, mysterious dragons to appear as soon as you travel, and too many other things to mention.

Now, if I walk EVERYWHERE patiently, Skyrim is a dream to play with hardly any bugs at all. My save file stays at a nice even 5000mb or so. no matter how far I go in any quest or how many things I kill. I even have ash piles and dead corpses go away after time.

So I guess fast travel is still not an option for me. Even carraiges cause these bugs to happen. Lokks like I'm still stuck slowly walking around Skyrim. It's not sooo bad. more emersive and get to kill more things along the roads, leveling up even more.