LR Mobile Android: thumnnails in higher resolution for 4k HDMI output

[Wurstkrapfen]

I shoot directly in Lightroom via wifi and the photos are uploaded as a smart preview to a cloud album directly during the event. My goal is to preview on a 4k screen as the photos come in. So I connected a phone to a TV via HDMI.

This works very well and the images look really good in full screen mode. But in thumbnail overview, the photos are very pixelated. Is there any way to improve this?

[Wurstkrapfen]

Its odd, everything else looks crisp, even the album thumbnails, just when I enter an album the photo thumbnails look way overcompressed. Its sad because thats the main view I'm using.