So I have been playing FTB for awhile and the problem I have been having is not a new one, but it has gotten worse over time and I have decide to see if I an fix it. I am using a Mac and I know about the bug when launching from the FTB launcher and i have fixed that problem and I also no longer use the launcher for this and other reasons. I currently use MulitMC, but have also used the Minecraft launcher and the FTB launcher. MulitMC seemed to crash the least so i choses to use that. When i crash it is complatly random i could be walking around my house opening chests/other blocks with GUI's but it dose not matter it will crash at random. Also there is no time i could be playing for 4 hours without a crash or i could play 10 minutes. There is never a crash log and the MulitMC console never says anything other than Minecraft has crashed which i already knew. I am using the DireWolf20 pack and it dose not matter if it is server or client though client crashes much more frequently then when i am on a server. On ssp i can play for maybe 20 minutes if i am lucky before a crash ad most of the time the world wont load when creating a new world. I know this is not my computer because I can play Minecraft with no mods almost perfectly with almost no lag. If someone could please help it would be greatly appreciated.