I have all the newest updates (511 and 1.2.2)...iPhone SE 2020.  In Normal mode, I can move the Yaw Smoothness slider from end to end with no effect...yaw movement immediately stops with release of control stick...there is no yaw buffer at all in any slider position.  Any ideas???

I have 1.2.2 but not 511 yet and all works fine. I am updating to 511 now and will let you know how it does with that....

I'm back after update to 511. Nothing changed, still ok with the smoothness adjustments. I even tried many settings of the speed and those had no effect on the smoothness effects. Looks ok to me. Android tablet, unapproved.