Plugin: https://www.spigotmc.org/resources/...ms-blocks-spawners-with-hopper-support.60648/ Basically a plugin to stack ground items, mobs, spawners and even blocks with customizeable configurations. Would possibly help with the current issues with lag and fix the bugs regarding the current mob stacking. I've worked with the developer before and know that he is very professional and fast with his updates and bug fixes.
