When I open the Crafting menu it drop FPS when scrolling and when it's being interacted with, this doesn't happen in DST which is curious.
This issue also happens in RoG.
Steps to Reproduce
Create a RoG or Shipwrecked world, open the inventory and scrolling up or down with the mouse wheel or with the buttons and the lag spikes will occur.
This issue has not been confirmed by a developer yet.