OK TomTom, I think I understand your question. This is something that is a little counterintuitive. The issue is how we measure how fast time is moving.
Let's imagine that we live in Mark Noble's Universe (and I suppose I should listen to what Mark has to say about this example since I am invoking his belief system) where time is not relative.
Now let's imagine that God, who is omnipotent in Mark's universe (at least I think he is but stick with me for a bit) decides to cut down the rate of time by one half.
The question is how would we know? I recognize the passing of time by how quickly the Earth revolves, by how many times my heart beats, by how quickly I can cross a room or how quickly ideas happen. All of these things move along with my clock... which ticks one time every second.
If God slows down time to half speed, how would we ever know? The clock would still click at regular intervals in what I would assume was still a second. I could cross the time in the same number of clock ticks. My heart would be beating in the same number of clock ticks and I could have the same number of thoughts in the same number of clock ticks.
The answer is (I hate giving away the answer) is that to us... living in Mark's Universe where there are no frames of reference, there is no way we could tell if time slows down. In fact the very phrase "time slows down" means absolutely nothing.
Do you follow this so far?