I'm not sure if that'd be the same because the chat is in a separate popup window. I'll try and look for a website with embedded chat as well as an embedded stream.
edit: apparently it had something to do with keeping chrome open for too long, i restarted chrome and everything was fine in the tftv window. if I leave it open too long chrome starts taking a ton of memory so that could be related to it, idk. it still happens if i mash keys or delete a really long message however