Fast shader that can run on laptops from before MMD was first released:
https://www.mediafire.com/file/v9haawvbwfdhgba/Shaders_220521.zip/fileModels are SPS's Sirius Summer (creator says to turn Japanese-mode slider「乳吊上げ」to 1 when using physics, to prevent drooping) and くむ式ルリナ04, whose stomach has a terrible texture edit I did to hint at muscles.
If you see someone making videos that only need a better shader, recommend this one to them. It doesn't need modern (aka within the last 10 years) graphics hardware like Ray-MMD.
Poses from
seiga.nicovideo.jp/seiga/im9161771. Bowlroll is 404 so reupload,
files.catbox.moe/oj8tup.zip
or other poses from same creator
bowlroll.net/user/4217Project emm file has shader versions used, which are basically either default specular, which means no specular for these models, or replacement specular. Specific materials have modifications to color, which was mostly to test what still looked good. Dark skin looks terrible without specular reflections.
Also used Rhinestone shader for sparkly effect, because the main shader, based on AdultShader, hasn't been set up to use normal maps or anything and it was the easiest way to get a different-looking material. Project file (poses, settings, and effect list) and screenshots here:
https://www.mediafire.com/file/vahfitouzu3n80o/Sirius+preview.zip/fileShader has a mirrored version (by setting "IS_MIRRORED" in shader file), and can also be used to view a model from two different angles, which could be helpful when animating; see 'Fake cam Extra pass' examples in preview folder. You'll have to enable the setting yourself, though.