📝 adjust performance section in README to reflect automatic adjustment of number of picker repetitions

Author: troberts-28

README.md

@@ -502,7 +502,7 @@ Note the minor limitations to the allowed styles for `pickerContainer` and `pick
 
 When the `disableInfiniteScroll` prop is not set, the picker gives the appearance of an infinitely scrolling picker by auto-scrolling forward/back when you near the start/end of the list. When the picker auto-scrolls, a momentary flicker is visible if you are scrolling very slowly.
 
-To mitigate for this, you can modify the `repeatHourNumbersNTimes`, `repeatMinuteNumbersNTimes` and `repeatSecondNumbersNTimes` props. These set the number of times the list of numbers in each picker is repeated. These have a performance trade-off: higher values mean the picker has to auto-scroll less to maintain the infinite scroll, but has to render a longer list of numbers. By default, the props are set to 7, 3 and 3, respectively, which balances that trade-off effectively.
+To mitigate for this, the list of numbers in each picker is repeated a given number of times based on the length of the list (8 times for the hours picker, and 3 times for the minutes and seconds picker). These have a performance trade-off: higher values mean the picker has to auto-scroll less to maintain the infinite scroll, but has to render a longer list of numbers. The number of repetitions automatically adjusts if the number of items in the picker changes (e.g. if an interval is included, or the maximum value is modified), balancing the trade-off. You can also manually adjust the number of repetitions in each picker with the `repeatHourNumbersNTimes`, `repeatMinuteNumbersNTimes` and `repeatSecondNumbersNTimes` props. 
 
 Note that you can avoid the auto-scroll flickering entirely by disabling infinite scroll. You could then set the above props to high values, so that a user has to scroll far down/up the list to reach the end of the list.