nothing wrong there.
i would suggest setting a lower DPI (720x720) which will use a lower VSD and slightly less ink. test that and see if it helps, if not there might be an over inking issue with the driver setting for Archival Matte Paper.
(I have no tested 720x720.)
I have tested the "Archival Paper" with the same settings as for the
"Heavyweight Matte" (the Heavyweight Matte profile also) this comes out
just the same as before.
And as I said before even with "Color Density -10%" there is some ink left
on the surface. So just reducing ink somewhat will not help.
It must be the paper. This paper seems to have been a flop.
The Heavyweight Matte Paper just has anoter coating (so it seems)
made for Dye ink to penetrate. And now it turns out to be better
for pigment ink too. Better longevity for the Heavyweight Matte also.
I could not believe it was that bad.
Time for a real replacement of this paper ( not just renaming) !
And why not skip this pigmentink.
Let us have 8-color DYE-INK instead.
If I try The Epson Ultrasmooth will the black ink stick to the surface
as with Archival matt ?