10 days ago, you played CT.
5 enthusiasm went to 2 (CT has been explained as cutting your enthusiasm by 50% or in this case 2.5). The daily rebalance rate up to your last update got you to over 4.
What that shows you is that the daily rebalance rate is about .2 a day (roughly) for values this close to 5, though the rebalance rate is noticably faster the further away from 5 you get.
When you TIEd, it has been explained that you gain 33% enthusiasm. So, for it to read a 5, you prior 4 value was between a 4.0 to 4.5 as those are the only real values that you can TIE with and still get a 5 current enthusiam, ranging somewhere between a 5.3 to 5.9 now.