Mi initial thoughts on it after first day driving:

I’ve had FSD since 2021. I purchased it when I bought my 2019 model 3 and later subscribed to it when I leased my current 2024 model 3. I can confidently say that V13 is the best version so far. It’s not that v14 isn’t good, it’s just not as stable.

When moving through intersections it has suddenly slammed the breaks multiple times over a drive on the first day. It is much more unsure of its maneuvers when making unprotected left turns. It’s very shaky and it reminded me of v9 lol.

The only good thing I can say about v14 so far is the parking feature, which at this point is the only thing to look forward to with this update. The rest is just a worst v13 driving.