Finally! I was wondering when the complaints would start to appear. I have a 2017 MS and I have had fsd from its purchase. I’ve watched it evolve over nearly 140k miles now. We MSers first received the NN version at 12.3.4 and I noticed immediately how it hugged the right line like it used to many versions back.
Version 11.4.9 was flawless in this area of locking down the center of the lane - flawless. As one other commenter stated, it didn’t used to act this way on a roadway I use every day. This new v12.3.4 (and 12.3.6-current) would easily get me pulled over to perform a sobriety test!
But here is the strange part. We’ve all heard that the stack of instructions for city driving was where they “…threw out 300 lines of code and adopted the neural network…” and left the highway driving stack alone. It seems like this is true. Interstate divided limited access highways still perform well. Solidly in the center, no fading right to ‘split the width’ passing exit or entrance ramps. All is as it was with 11.4.9.
But now, let me define city driving a little bit more:
On tight city streets, or 2 lane roads with no shoulder and not high speed, or urban 4 lane metropolis streets, fsd generally performs better than version 11.4.9 did. As one commenter also said, it will navigate across the double yellow line to go around some object blocking a portion of my lane. It even waited until an oncoming car passed so that it could actually go across the yellow line in order to pass the offending object. That was new and fsd handled it very well.
But in 2 lane high speed roads (State Roads?) with a car width shoulder, fsd wanders over the lines. If a straight road, it wanders over to the right and eventually goes back to the center… almost. And it seems to generally occur in the same locations day after day. Night driving might change it slightly. But it’s still regular and bad. In a leftward bend, fsd hugs the left side and on one particular spot definitely goes over the line.
Now these situations are quite regular yet sometimes are a little different or will occur somewhere that it’s not occurred before. What types of roads that it does this on, is the difficult part to describe. The interstate highway is fine. The tight streets with no shoulders or deep city driving seem to be fine. Its the ‘intermediate’ streets.(so hard to really define this) that are the downfall of this version. FSD used to be this way in the early days, but it was completely gone in 11.4.9. Granted it could not handle tinier roads, suburban neighborhoods, and tight city streets as well as 12.3.6 does. So ultimately it’s a mixed blessing.
And, yes I have recalibrated the cameras with not the tiniest bit of difference.
I was so glad to finally hear others complain— it’s not something wrong with my particular vehicle.
certainly hope it gets handled soon because this is embarrassing to have someone following me see how this car is driving. And to top it off now when you take control back over, it drops the cruise control so you have to immediately get your foot back on the pedal in order to maintain speed. I can see why people are complaining about Teslas.
—kp3
