[Photo Viewer that will open Affinity Photo files (neither Irfanview or Faststone can)]

Pixave 2  (Mac only) has worked well for me since 2016 for previewing Affinity Photo and Designer files. 🚀

[White Lines in Export]

Just an observation, but the 'white' lines' actually appear to be void of pixel data and shows up as transparent when opened in an alternate image editor. Not sure if that's helpful for debugging this issue. 
 

[White Lines in Export]

This 'work around' worked for me as well. But as a busy health professional, I didn't have time to scour the forums initially and instead resorted to alternate image editors until I had time to research the potential issue. Perhaps there should be a disclaimer, warning or perhaps hardware acceleration should be disabled by default, allowing the user to enable hardware acceleration with said-caveat. 

 

[Introduce Yourself]

Hi everyone,

I received my Master's of Science degree in Medical Illustration and started using Photoshop (full-time) in 1995. I enjoy doing digital illustrations using various applications (2d and 3d). 

Cheers,

 

Gary