Sentinel 2 viewing angles interpolation (on per-pixel basis)

Hi,
Actually, azimuth angles are still not satisfactory (both viewing and solar). You may notice in the attachment that azimuth exhibits kind of square shapes whereas reflectance image (here in B8a) shows a demarcation following a straight line.
What do you think? Should the interpolation (resampling) be performed on a per-granule (tile) basis?
all the best,
Tristan