Any motion blur that is same like Shutter Speed on phone but without FPS Drop?

I am failing to find any shader that has motion blur with Human Eye vision. Like you in Brain See more than 10000 FPS, But your eye Has Shutter Speed 1/25 to 1/70 depends on if you are regular human or Someone with quick reactions. But your brain always captures around 10000 FPS. And I wanna Some Motion blur that has EXACLY  like that, But I find only trails.fx that really ruins quality in games turning your screen from 32 bits to only 16, Then Blue noise motion blur, It is just noisy motion blur with pixels. But Nothing What I wanna. Can you please create a simple shader for Motion Blur that can just leave a frame to time what I wanna? I would like to do its own, But problem is I do not have brain capacity to do codes. so Can you create simple Motion blur that Leaves a Frame for time I decide, but without dropping the framerate leight when I stretch time? Thanks for reading