Timer slower than reality

Hi Guys,

I have a strange bug on my protools 2020. It occurs on two different machines.

It seems that the timer is not well setup.

When bouncing a song, the duration is always longer than showed in protools (but the speed is unchanged).

I have made a quick test to show the issue.
I have setup the tempo at 60, 4 beats per measure. So at the end of measure 15, the timer in protools should show exactly 1 minute (because 60 beats of one sec have occured).

However the timer show : 0:57.600

If I am bouncing the song from bar 1 to end of 15, the wav and mp3 show a duration of exactly 1minute in Itunes !

So it seems that my timer is totally out !

I'm pretty sure it should be an easy setting.

Thanks for your help

PS : here is a picture of my protools edit window :

https://ibb.co/JFrxWxR