Odd... I'll give your account a look to see if there's anything funky with your account.
EDIT: I couldn't find anything wrong with either of your characters, so I've elected to remove all of your skills from your main character, to see if that helps. I've written down how many/which skills you have so if it doesnt solve that, I'll replace them LOL! Also, what are your settings for LM? The .exe is only supposed to crash if it's really overloaded/computer cant handle LM. From your screenshot it seems like you are playing in fullscreen mode. I know for a fact that fullscreen mode is more laggy than windowed mode, so give that a try. Also please let us know which rendering system you are using, and be sure to try the other one as well!