@Angelaatje nice rant :D Do you check if the timer was started early or late as well? I often subtract less than a second off of my runs after rewatching frame by frame and finding I started my timer 0.XX seconds too early.

If you do that you might as well just calculate the time from the total amount of frames. Just changing the whole time by an offset of however much it was off in the beginning doesn't account for splitting early or late at the end either.