Beats me too.
Every last chair sold is set up this way ever since some programmer decided that "turn acceleration" or rather a reduced amount of it was a good idea. So for 20 years or more every single chair sold has 4 settings that are absolutely stupid. And these mean that every last chair drives in what I call hovercraft mode.
I have removed the walls (where set) and then set:
turn accel,
min turn accel,
turn deceleration,
min turn deceleration all to 100.
This effectively makes it turn and stop turning
when you tell it instead of "accelerating" into any turn input and keeping on turning ever more, long after you told it to go straight...
If the turning is then too "sharp" or sensitive you should then REDUCE
turn speed, and
minimum turn speed instead.
This is basically 4 walls moved, and 4 acc/dec settings set to max.
The difference on peoples faces after spending years "learning" to drive a chair tells me everything I need to know.
Nobody yet in 25 years of doing this, has ever said
put it back! The difference is a chair where you never give it a thought. That simply goes where you think it should, literally to the mm. With absolute confidence. Its not a small difference. All those that never tried this will tell you that their chairs steer fine!
Because they simply do not understand the difference.
Quite why they send them all out this way? Not a clue. Its dangerous and its stupid.