Hello everyone....I have been scouring the web for a solution as I'm looking to up date or purchase a new computer. The machine is about 5 years old. I use Windows Photo Viewer ( running windows 10) to view then cull my RAF files before importing into software...Lightroom or Photoshop...I can see the thumbnails , but when I click on the image its incredibly slow to render and when it does it turns the image vertically and it looks like a rugby ball. It does finally render correctly. Viewer is just sooooooooo slow...I do not have this issues with my Nikon NEF raw files. Looking for the "fix" to apply it to the new computer...... Thank-you for you patience..