suggest adding config ability to change the update frequency
when having a large factory with many of these (100+) they do cause quite a number of updates per tick, there by causing additional lag
suggest making the update frequency available to change
example: update once every 60 ticks or more, sometimes i don't need but a glance at how much is in there and i can then go adjust something else, i don't think i have used them in any of my situations where i need them to update more than once per second. and in many situations it could be set as high as once a minute.
