Just because its taking a long time doesn't mean give up, TG2 just has a steeper learning curve on what settings you really need to pick. Some settings you mightve set unnecessarily high or checked things you shouldnt, etc. It isn't like TG .9 where you can just throw everything on high and go. You have to think about your system, and what quality you want Many times the sliders arn't ment to go to full except in very rare cases, and the numbers arnt supposed to be changed by too much.
Also, for chan im assuming you are looking at those "import chan" areas and such, and yes, its for animation. A .chan file (or even a normal .txt formatted correctly) allows you to import the camera movement from an external source. Some people animate the camera around in other software and then move into TG2.