Tangentially, I know of killmouseaccel[1] which does exactly what it says: disables mouse acceleration on macOS. However, it needs to be executed at every restart, or deamonized.
SteerMouse, among other things, has a nice total bypass for it. Here, I am just using the raw DPI and linear movement of my mouse: https://i.imgur.com/xEEjjVD.png
As I understand it, Windows too has mouse-acceleration that remains (rather subtly) even after disabling "Enhance pointer precision" in Control Panel. When I was into competitive gaming, there was a Registry fix doing the rounds that got rid of it completely.
[1] https://github.com/docwhat/killmouseaccel
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