Board Thread:Bug Reports/@comment-26084755-20151003200137/@comment-26491452-20151004004901

TheStudyOfTheUnknown wrote: The problem you most likely have is that you only have 512 mb of ram allocated. The mod since beta 24.4 needs a tiny bit over that amount of ram. If you are on a pc, find a tututorial on the internet to how to allocate more ram for a game, application etc. If you are on a mac you should already have 1 gig allocated. I got lots of lag with Beta24, Finally I give minecraft 3 G and it stoped laging. You should at least give minecraft 2 G if you don't  want lag.