Good day everybody.
Probably there is no solution to this anyway, but here is my issue:
For a 2D scrolling game, if sprites or tiles are moved faster than the monitor’s refresh rate, typically 60Hz, thus more than 60 pixel per seconds, the resulting animation lacks a bit of smoothness, because it is simply impossible to see every single drawing position.
Only advice I found was to draw additional half-transparent images, but that did not really improve the visual impression.
What do you think about this ?
Motion blur.
That’s what I tried - but couldn’t improve the visual impression. Maybe I have to do further experiments with it.
Maybe you’re worrying too much about this. Do you think every game out there doesn’t move more than 60 pixels a second? In a game amidst entities moving, animations animating, and stuff happening no one will notice these tiny details 
You could be right about that.
Maybe that’s the urge of trying to get the best from two dimensions while feeling inferior to all the 3D stuff of these days ;D