Just wanted to share a tidbit you could look at, since I had a similar issue. The animations are on the section, then wrapper, then the text div. I would try taking those text elements off their own individual interaction. In the code this will be 8 different jQuery/JavaScript references. You can take each 4 and put into 1 interaction block, which would remove 6 code references and leave 2. Those text lines can be staggered inside the same interaction and now the timer will sync a little better.
Just like you did for the second case preview on the last wrapper. Try this for all your blocks and see if that helps.