You could try increasing 'Infill/perimeters overlap'. Its helped me before. https://forum.prusa3d.com/forum/prusaslicer/gap-between-solid-infill-and-perimeters/
You could try increasing 'Infill/perimeters overlap'. Its helped me before. https://forum.prusa3d.com/forum/prusaslicer/gap-between-solid-infill-and-perimeters/