Board Thread:LotR Mod Technical Support/@comment-26072584-20150628225018/@comment-29106566-20150628230516

There are several things that may cause this. 1: Using other mods, especially a large amount. 2: You haven't allowed minecraft to use enough RAM. 3: You have hardware-intensive programs running. You may also wany to open the task manager and set minecraft's priority to high.