Totally anecdotal, but over the last few weeks I've noticed issues where my friends list or 'What's New'' on PS4 UI can take a long time time to load.
Playing Driveclub yesterday and today, I've found that the ability to connect to the online servers seems to correlate to how well the PS4 UI is able to load up the friends list, and part of the 1.03 patch notes had the strange "Fixes out of memory crashed due to multiple large avatars on the friends list." message.
(I've noticed today while playing time trials, sometimes your ghost has your PSN avatar, sometimes it's just blank)
Is it possible that this is more of a general PSN problem than Evolution's?