BTRFS Raid 5/6 - stripe size configuration

Good morning,

anyone got experience with the new stripe size config in BTRFS progs 4.4?
https://btrfs.wiki.kernel.org/index.php/Changelog#btrfs-progs_4.4_.28Jan_2016.29

I have slow read/write on my raid5, and would like to know if stripe size improves the performance.