Should the top edge of the window always be as high as possible?

Hello everyone,

unfortunately, the ceiling was set at 2.57m, although our plan states 2.675m. This will be corrected tomorrow – so far, only the finished ceilings are in place. As a client without a site manager, you really have to go to the construction site every day...
However, the blinds boxes have already been installed, so they are at a lintel height of 2.25m (2.57m - 0.3m for the boxes). My question now:

Shouldn't the boxes also be adjusted upwards so that the later distance between the windows and the ceiling is not unnecessarily large and the windows are not unnecessarily small? With a parapet height of 0.92m, the windows would only be a maximum of 1.35m, with adjustment then 1.45m.

The window manufacturer says the boxes have to be raised – but he would also earn more due to the subsequent special size for the exterior doors of 2.35m.
The architect, who has to pay for moving the ceiling because the execution plans deviated here, says we should leave the boxes as they are – but probably not without self-interest either.

So I would like some more neutral assessments here.

Thanks,
Frank

Increase, the windows just cost more - but whether 2.25 or 2.35 is, in my opinion, a difference you will otherwise regret.

Hello Frank
Very simple calculation: take a tape measure (folding rule) with 2.25, hold it against a door, add plaster and shutter (which does not completely disappear into the boxes).
And you will regret for a lifetime that you did not set the boxes higher up.

To be honest, I also had this assessment based on intuition - many thanks for the clear confirmation! Now the window manufacturer just needs to confirm to me tomorrow morning that he still trusts his plastic frame (Veka Softline 82) to have high stability even at 2.26m width and 2.35m height with the two-leaf patio door with mullion with Veka...

Make sure everyone is aware of it – just so the windows still fit into the openings and not the other way around.

Our little window builders here apparently always drive to the construction site before manufacturing to take the real measurements on site.