Roku 4: photo quality is bad
I have a Roku 4 attached to a 4k 60" TV.
When I watch photos with Plex the quality is very bad.
If I watch the same photos with Roku's Media Player the quality is excellent (but I have other problems with it, like wrong orientation for portrait photos - do you know any alternative?).
Is there any way to increase Plex' photo quality to full 4k?