Some parts of the Spotify Windows 10 client UI has a very nice, satisfyingly sharp font.
Other parts of the UI has a blurry font that routinely kills puppies.
Example: In the social feed (right side of the client), every other "post" has a sharp font, while the rest are blurry - first post is always sharp, second post is always blurry, third post is sharp, and so on.
Please see the attached screenshot called blurry-social-feed.png - Zoom in and compare the letter "G" in the song title of the first and second item.
The playlist is also blurry, but in a different way:
The header, header image, and header text are all perfectly crisp. However, all the song titles, artist names, etc are blurry. Please see the attached screenshot called blurry-playlist.png
These are my main pain points, as the rest of the UI is reasonably sharp. Please have a look at fixing these, as they seem to be fixable - some parts of the UI are already sharp!