i was delighted to get the very latest software release to my tesla s 90d which i originally took delivery of at the end of march. TACC is great. I find that autosteer is possible up to 55 on A roads but on any challenging bends its simply too scary to work with. However i tried it on the motorway and at 80 mph is was great. For one drive of about an hour. however since then it has been applying the 55 mph limit to motorways as well. i feel i must have upset it in some way any clues as to why this maybe? gone back into a learning mode?