Gluster users - Apr 2017 - cant see files with performance settings

Hi,
i have latest glusterfs 3.6.10.1 installed. I read about setting
performance.readdir-ahead and performance.parallel-readdir and set both to on. I
have a 3 brick distributed volume. after set to on i create a file "touch
test", but i cant see the file with ls and on graphical browser gui, which
is connected via nfs. if i disable both option the file is shown.
Any idea?

thx