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I don't know if this can be interesting to some of you but, just in case:

Shader Beam brings CRT-style motion clarity to high-refresh monitors
https://videocardz.com/newz/shaderbeam-brings-crt-style-motion-clarity-to-high-refresh-monitors
ShaderBeam is a new open-source Windows overlay that runs Blur Busters BFI and CRT Beam Simulation shaders on top of your desktop and fullscreen games. The first public beta, v0.1, was released on December 28, 2025.

The main goal for this project is motion clarity. CRTs look clearer in motion because they behave like an impulse display: each pixel lights up briefly as the beam scans, then it fades, instead of holding a full frame steady for the whole refresh. On modern LCD and OLED panels, that "sample-and-hold" behavior creates blur when your eyes track moving objects, even if pixel response times are fast.

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ShaderBeam is fullscreen-only, requires VSync, and it is sensitive to timing and GPU scheduling, so missed frames can show up as irregular flashing. So what's recommended is to use two graphics cards, one fully devoted to Shader Beam. Iti s also suggested to turn off off HAGS, VRR (G-Sync and FreeSync), and HDR, and it warns that multi-monitor setups and other overlays can make things worse.