1. In order to provide perfect mouse broadcasting and instant window swapping, the windows are all running at the main resolution (Swap can be disabled in your Window Layout if you want). This results in higher cpu/gpu usage than you had with keyclone, so you get lower FPS. What we usually do is turn down all video settings on the toons that are usually in the background. I also personally run with my background windows at 15 fps (foreground at 30 or 60), since it seems to work just as well and that keeps my cpu/gpu usage down. The FPS settings in ISBoxer are per Slot in your Character Set.

2. Sounds like you've got some alt-codes in your password and unfortunately that doesn't broadcast correctly (apparently this isn't a common problem or otherwise hasn't been reported). I'll have to look into that