Just tried 180 degrees and that seems to work as well. I’m not sure there’s much of a difference between the two other than 180 having an advantage that the bumpstops give you confirmation you are exactly at 90 degrees whereas 180 you have to visually kind of guess.
For smoothness, i’m using in game filtering of about 65% with a recon filter of 2. I get some bumpiness which is typical of a kart, but i’m not finding it unbearable. I also run a much lower force than most people do (maybe 10Nm max).