So I've been playing FTB for a while now and have built a fair amount but lately I have been getting so much lag in my single player world then it will crash where to the point now if I log into my world it will all shut down in under five minutes which afterward I have to force quit it then restart it which takes 2 minutes then I finally get back in for it to crash again. It has been very frustrating. I would like to keep playing but I am not sure if there are some tests I need to run or make changes to my computer to get it running better and I could use some help. Just other facts about my world, I have done quite a lot of exploring, which I dont know if that would be affecting it, but for the most part I have just been doing smaller things with the bees in forestry. I thought the log file from after one of the crashes might help so I'll add that file and if there is anything else someone would need to help me trouble shoot this I can post it also, I really want to get this figured out so I can start playing some more. Btw I'm using a mac if that makes any difference as well. Any help will be greatly appreciated, thanks.