Motion blur can help compensate for low framerates if it's (approximately) physically accurate, i.e. temporally oversampled. This is how 24fps movies can look t

Motion blur can help compensate for low framerates if it's (approximately) physically accurate, i.e. temporally oversampled. This is how 24fps movies can look tolerable despite the ultra-low framerate: each frame provides more information about how the contents are moving than just a single unfiltered sample, because you can follow the motion blur trails. This is complicated by computer graphics being gamma corrected. If you average multiple temporal samples together in sRGB colorspace, brightness will vary unrealistically with motion speed. You need to calculate the motion blur in linear colorspace then convert to gamma colorspace before displaying it. And for best results, the image to be blurred should be HDR, with the blurred version mapped to the lower dynamic range of the screen. This best replicates in-camera motion blur, giving you clear trails behind bright points. However, any deliberately introduced motion blur is inferior to just increasing framerate. Your eyes already provide motion blur. Anything added by simulation or camera is unrealistic additional motion blur on top of this.