Ghosting in animation sequence of 4koa

Has anyone else noticed ghosting in animation sequence of 4koa?

If you don't know what I'm talking about then watch opening of 4koa season 2 on YT and then watch it in any S2 episode, you'll feel at some point there's ghosting in fast movements scenes.

It kinda makes animation weird, like when there are some fast movements in animation (specially in fights), animation gets ghosted. I just want to know why this studio doing this? And will there be any other version of the anime without ghosting?