Using higher fees does not guarantee next block inclusion of your transaction.
If you use the recommended fee, you are doing probably the best you can to get it included the fastest as possible.
Unfortunately, sometimes to backlog increases due to spam transactions or slow block finds which may slow down when your transaction gets confirmed.
It doesn't?
I have always thought that it does guarantee it to be sent faster. Then why even put a higher than needed recommended fee in the first place?
I did last night and 24 hours later it still has not had one full confirmation yet on the send.