Stack Crafting Lag?


Has anyone noticed the lag on servers when someone shift clicks a stack to craft?
Can’t seem to figure out what’s causing it.
Here’s my timings report:

And I caught another dip in tps on this one


I have also noticed this, wasn’t sure what was causing it though as I use a lot of mods.


I heard it might just be a bug with 1.12, as it treats every single item in that stack as its own craft. So it has to recalculate all mods and modded recipes each time.


I wonder if that could be addressed somehow by Sponge… maybe make a request in SpongeCommon, to see if the devs have an idea?