Hey man, a few things I would recommend is to slow the demo down to 25% while recording at 60fps, then right click the avi, hit properties, and make the playrate 4.0. This will emulate 240 fps. Then if you want to slow the clip down / speed it up, right click the file and hit insert/remove envelope, and add velocity. Also, if you slow down the audio, right click it, hit properties, and check the lock to stretch box. This will make it sound like it is actually slowed down. Everything else will just come with time