[Arrei]

From what I've been told, 1.9 brought more lag associated with redstone and hoppers, for which Frost has been trying to address without messing it up too much. Prior to 1.10 he was apparently using some sort of plugin, which was also affecting their timings then. I don't know if these lag issues are new or if he's just found the old reports about hoppers causing lag that have been floating around for a few years now, but he observed our TPS tanking rather heavily during peak hours. The timings showed hoppers were causing a fair amount of slowdown, but we were unable to find anything like people using inefficient giant hopper sheets or anything like that.