Skeleton Deformation low quality in my animations

Hello. I have been using Synfig Studio for over 4 years and I currently have a problem with Skeleton Deformation. I am creating an educational project and I wanted to deform bitmaps to generate more organic animations. But I have encountered difficulties such as when using skeleton deformation and the resolution in parts has a terrible knurl. If anyone can help me they will be saving one of the big projects I have for this year.