I'm experiencing insane lag spikes every 5 seconds in my single player world, it's literally making it unplayable! Before you start replying saying I need to allocate more RAM & install optifine, i've already done that. Allocated RAM: 4GB I'm playing on a mac, though i'm getting around 40 - 60 fps whilst playing on the mod pack, lagspikes bring it down to 0 - 5 fps. *sadfaic* So yup, if you guys are or have been experiencing something like this and know a fix, PLEASE reply as I love the mod pack but am unable to play due to the lag spikes. Lag spikes should be killed. Whoever created them should be lag spiked to death. Oh, YES I am on the latest version of java.