I have some chute storage set up for gems and i've noticed that despite me having a hella good pc, sometimes the game drops to maybe 15 to 20 frames per second while theres barely anything on screen
i figured this out since i was lagging a bit and grabbed a bunch of of gems (emeralds, diamonds and geode shards) and it instantly stopped lagging
some kinda of combination of those gem and/or environment (pillars to the conveyor belts or the chute its self) is causing my game to slow to a snails pace