Dragging Particles Cause Too Much Pixelation

[Fisixus]

Hi,

What do you mean by "moveable zone radius"? Is this "Skinning Max Distance" or some parameter of your own?

In the images it just looks like you need higher mesh density (more vertices per area unit), while keeping the same particle resolution.

kind regards,

It's the parameter I created. What I've meant is the same as your first picture. I don't limit the movement of particles in that radius. 
This object already has 112k vertices, I only use that for creating the blueprint, I am not showing that in the actual scene. So, I'll try with 224k and 448k also but FPS might be a concern from a certain point.
Unfortunately, I can't make any static adjustments, that's why I am not able to increase the number of vertices in a certain area. 
Best,