Board Thread:LotR Mod Technical Support/@comment-26017343-20150429003942

I recently directly upgraded from beta 21 to beta 23. I continued to play on a world that I had created in beta 21, but started experiencing repeated fps drops, making the game unplayable. I thought it was just a problem with that specific world, but the same thing happened when i tried to create a new one. Even stranger, when I play on a lotr server, everything is fine ! the game is as smooth as it can be ! LOTR is the only mod i'm using, and my forge version is 10.13.2.1230. I don't have fastcraft, althought I tried it but it didn't improve anything. Also vanilla minecraft is working normaly.

if any one has an idea of what is going on, thank you in advance. 