QNAP NAS - Artist Pictures not changing between songs on Chromecast and Apple TV Displays

I am running Roon 1.8 (build 884) on a QNAP TVS-671 (Intel i7 & 16Gb RAM).

I am having the problem, both on Chromecast and Apple TV. Track and progress bar is frozen on progress of first track played (14 seconds into first track played after re-connecting to chromecast/appleTV).Track title will not change, nor does Cover art between Artists/Albums.