Just to add to this.
Fast, mid or slow is the delay speed in which the current lean angle is displayed.
The panel will display max lean angle achieved for left and right sides. This saved figure resets itself when you turn the ignition off.
(So take a photo before you switch off if you wanted to show someone how big your balls are)
For me I set mine to slow. I tried fast and mid, but buy the time I was out of the corner and looked down it was gone.
I guess I prefer to concentrate on the actual corner then have to quick look when upright and on the straight.