WORLDGUARD-3683 - Reported by FrozenBeard

Since moving to 1.9.2 there has been some major issues with hoppers, looking deeper using the Timings V2, it turns up WorldGuard as a major culprit with hopper lag to add onto the already existing bad hopper code.
Full timings report:

Minecraft::tickTileEntity - nms.TileEntityHopper
WorldGuard::Event: c.s.w.b.l.EventAbstractionListener (InventoryMoveItemEvent)

Is taking up 4.6% of all system resources.

Comment by wizjany

"Full timings report"
you literally just listed two lines without even the numbers associated.
literally tells nothing. even a full timings report isn't really conclusive, a CPU profiling (/wg report -p) would be much more helpful.
even then, it's not necessarily a problem with our code. generally if hoppers are taking up huge amounts of cpu time, it's simply because the server has far too many of them.