Basically, we need to add one frame to all times on the leaderboard. This is why.

We're taking the timestamp of the end frame and subtracting the timestamp of the start frame. However, this leaves us with the wrong result.

Let's use the task of counting pages in a book to explain:

Start page: 1 End page: 10 List of these pages: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Number of pages: 10 = 10-1***+1***

I will update the timing guide

Ok all times are corrected. A bigger task is to correct all the times without loads...