hey erc, the glitch only occurs at very high frame rates afaik
just limiting the fps is enough, i think 90 is fine

Thank you for this. Just finished my playthrough with your pack installed. Can confirm that the loading times are better with your fixes. Felt more authentic with the Russian VO too. Another thing that may prove helpful for future players: forcing external v-sync results in severe lightning glitches on world brushes. I solved it by changing the v-sync method to fast and limiting the max framerate to 62.

I did a compared analysis of the files from all three versions of Red Veil using WinMerge and found the files mdl_burn_no_bump.vsh, mesh_scale_normal_dir.vsh, particle.vsh, particle_proj.vsh and soft_particle.vsh in vshader missing from the Russian version, with an extra particle1.vsh included in the Italian version. And the following files bwdeath.psh, color_filter.psh, colordec.psh, colordec_inv.psh, deffered.psh, DOF.psh, ebm_scr.psh, edgedetect.psh, fill_tex.psh, HDR.psh, hdr_all.psh, hdr_ps20_nosky_eye.psh, hdr_ps20_sky_eye.psh, hdr_ps20_sky_eye_hi.psh, inverse.psh, models_nobump_burn_ps20.psh, models_nobump_fire_ps11.psh, monochrome.psh, monochrome2.psh, radial_blur.psh, relief.psh, sharpen.psh, soft_particles.psh, water.psh missing from pshader and the Italian version also including 2texlerp.psh, 2texlerp_height.psh, ebm_height.psh, HDR_old.psh, night_vis.psh, Room.psh, shaders.psh, water_ebm.psh and additional changes to DOF.psh and DRF.psh.

Where do you find the reshade and ragdolls? They don't appear to be in the download.

Oh. You are talking about reshade. Not the shader fix (witch is post processing)
Reshade can be carried over.

You say post processing is only available for Red Veil. Hows it added, reshade or enb?

You can reduce the pixel shader version and vertex shader version but they all indeed run under dx9.

I was under the assumption it was 8.1 instead of 9.

The stalin subway does use dx9. Unless you are referring some some advanced instruction set of dx9.

Should be possible to make the first Stalin Subway use dx9 using corsair or enb's converter.