Exporting frames to PDF - pixelation


When I export my design frames to pdf on Mac they look great. But once I send them to my work VDI - Window bases and open them, the pdf quality reduces a lot, the teext looks slightly pixelated/blurry. If i go into preferences within the pdf, I can check the ‘smooth line art’ and ‘smooth images’ options and this resolves it locally, but when i send it to a colleague they get the same issue.

I’d like to know how to resolve this at Figma side, does anyone know?