If you can run RetroArch at 240 Hz on an OLED in "game mode", you can use CRT Beam Simulation to get pretty close to the CRT feel for motion https://blurbusters.com/crt-simulation-in-a-gpu-shader-looks...

If you have an HDR TV, preferably OLED, and miss the CRT look, check out the RetroTink 4K https://www.retrotink.com/