As has been mentioned on the mailing list dvips seems to no longer recognize paper options.
I tested it and can confirm that dvips -ta3 test-utf8
on a hello world document has no effect in miktex, while it gives an A3-ps in texlive.
The problem seems to be that dvips doesn't read the config.ps When I set the environment variable DVIPSDEBUG then miktex outputs:
C:\Users\USER\Documents\tests>set DVIPSDEBUG=-1 C:\Users\USER\Documents\tests>dvips test-utf8 {C:/Users/USER/AppData/Local/MiKTeX/2.9/dvips/config/psfonts.map} This is dvips(k) 5.996 Copyright 2016 Radical Eye Software (www.radicaleye.com) ' TeX output 2016.05.18:2209' -> test-utf8.ps <C:/Users/USER/MikTeX/dvips/base/tex.pro> <C:/Users/USER/MikTeX/dvips/base/texps.pro>. <C:/Users/USER/MikTeX/fonts/type1/public/amsfonts/cm/cmr12.pfb> [1]
while the output of texlive begins with the call of config.ps:
C:\Users\USER\Documents\tests>dvips test-utf8 {c:/texlive/2016/texmf-dist/dvips/config/config.ps} {c:/texlive/2016/texmf-var/fonts/map/dvips/updmap/psfonts.map}
The curious thing is that in a trace one can see that dvips searches and access config.ps:
[2556] TRACE dvips.core - accessing file C:\Users\USER\MikTeX\dvips\config\config.ps: OK
Thank you. This has been fixed now. MiKTeX-Dvips found the config files(s). But loading the file(s) did not happen.