I may have a clue for this one: Unless you specifically set an interval in the Feed interval drop-down box when you set up the Feed on the Input Process list, but leave “Select interval” showing, it appears to default to 5 s. I accidentally found this while checking something else and it’s reported here
and I’ve PM’d @TrystanLea over the weekend to draw his attention to the problem.
I’m afraid I don’t know how you recover from this, but I believe it is possible.