On some cobblestones segments the ETA time for the segment is totally wrong for *** of the north 1 and 2

I have done the *** of the north 1 and 2 course with the newest beta (4.43.1) For some of the cobblestone segments the ETA time for the segment is totally wrong. To demonstrate this I have created a subcourse and have used the demo mode. On the appended picture you can see this. For the whole course the ETA is 7:44 for 4.72 km and for the part with 1.6 km also 7:44.