but I can't figure out how to fix it.

lately I've been getting a FPS drop on one character only.
I'm using Jamba and I've disable most of my other addons.
It seems to have a HUGE backlog of combat text being displayed up.
I've attached images of this problem. the other characters that are not dropping FPS have the option to manipulate the chat options.

does anyone know how to fix this?

this is what the working wow look like
Attachment 243

this is what instance with low FPS starts out with no options to change chat now matter where I click
Attachment 244

and the never ending scrolling text that continues for 5 minutes after a short fight
Attachment 245