> I hate to say this. RetroArch have a slowdown when using those. Be better on MAME > than RetroArch. Unless RetroArch DEV fix that slowdown issue.
Never experienced slowdowns because of CRT shaders in RA myself, must be your system or settings, it probably comes from something else...really, I even combined lag reduction (hard gpu sync) with those without problem, but it's damn heavy. Some shaders are very lightweight but less realistic than HLSL or Geom. RetroArch isn't easier to configure than MAME nor without its issues, you can do everything via OSD and the shader settings save, but its a real mess that takes as much time to get used to. At the end what matters is that you get what you want. Personally the reason I don't use RA as a main solution is that MAME doesn't work as well in there as the vanilla, and it lacks access to some options I need which is infuriating.
EDIT: I think I remember something related that might be the slodowns you mention, in retroarch if you edit the shaders settings live in the OSD then use the secondary menus to save, you will get slowdowns that might stick. To be honest I get slowdowns while setting shaders in MAME too, but they're gone when I exit the OSD. If you want to edit and save without slowdonwns in RA iirc you have to edit the files and comment-out some lines, I don't remember clearly, but doing it in that fashion makes it as obscure and complicated as doing it from BGFX's .json files. Bet if people like RA's shaders system more is bc you can still configure settings via OSD and save that way, and there's more choice (plus the lag reduction) although overall it is not much more convenient in practice.
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