Ok, I gotta say: none of the shaders or scanlines I've tried before ever came close to what I'm seeing in those videos; to the point I'd think "uh looks nice but that's not how I remember from the 90s".
Now that crt royale... Color me impressed! Gonna try it as soon as I get access to a PC.
I've heard people say for CRT Royale to be truly effective you need to use it on a 4K TV. It apparently needs the additional resolution to truly shine.
Having said that, it already looks really impressive to me on a 1080p TV.
https://github.com/libretro/common-shaders/tree/master/crt/s...
Sonic https://www.youtube.com/watch?v=u77TUkFHNyI
Streetfighter https://youtu.be/xrpm8o17cHE?t=903
Other resources: https://www.resetera.com/threads/crt-shaders-scanlines-ot-be... https://www.youtube.com/watch?v=qBzB0YdHn64