Right it seems ive made a massive oversight with regards to this stage, so im gonna to apologise now...
It seems the parcours is not actually as flat as I thought, and it shouldn't be/isn't a flat stage. When I read the stage profile I saw climbs of 2.9km at 6.1% and 6.3km at 2.9% so thought it was pretty flat. However I failed to notice that on each of these climbs they actually ramp up to 27% that I failed to notice
So all I can do right now is apologise for that