Dude! The animations used in this title are from a much older version of Ren'Py and use much older assets than what is available now! They work more like .gif files than the more recent move to .mp4 type animations. This game was completed four years ago! You cannot expect it to have the longer, more fluid animations of games that just released this year!
If you want smooth as silk, up to date animations in vivid definition, check out Philly's latest game, City of Broken Dreamers. DA was his first ever attempt at making an AVN game! You will see the improvements he's made over time for both rendering and animation in his latest title.
Also, you cannot unlock all of the content in any Philly Games title in a single play. You must replay and make different choices to see all of the scene options. Go to the main title page and click on the "Scene Gallery." If you have unlocked all of the content, you will see all 45 of the available animation replay options available. Any ??? or blurred out images mean that you have not unlocked that scene. The same holds true for CoBD as well.
Hope this helps you, my friend. Adventure ever on, Phat

PS: Did you find either of these endings?