Decreased Mob Spawn Rates
So I know this isn't about DH, sorry, but the modded Minecraft server help channel is ghosting me, my question has been buried among a hundred others, and I don't know enough to solve this. I've had the Higher Heights datapack (https://modrinth.com/datapack/higher-heights-datapack) on my singleplayer for several months now, but I just noticed its tanking my spawn rates (from ~1700/hr to <150/hr). I took a schematic of a farm I built in survival, then created two identical worlds, one with the datapack and one without. I pasted the schematic in the same spot, down to the block, then tested both in survival. The one without the datapack was spawning creepers every few seconds while the other wouldn't spawn one after several minutes (see screenshots). Does someone know why this is happening, and whether or not I can keep it from ruining my singleplayer world, which is built around the higher build height?
Modrinth
A datapack that changes the build height limit to 4064 blocks in The Overworld & End, and 2032 blocks in The Nether
