I have/had a blue spinner issue. Every couple of minutes, for a second or two. Whether on a FTA channel, premium satellite channel or IPTV stream.
It started when I loaded my IPTV script and EPG importer. Suspecting that there was too much going on with my h2s, I stripped out all the unnecessary plugins. Disabled timeshift. I've reflashed Wooshbuild and OpenATV umpteen times. Formatted my USB drive, then even changed it for another and I still get the spinner!
There's clearly something working away on the background, but I'm damned if I can find it!
For the sake of my sanity, I've disabled the 'show animation while busy' in the OSD settings. I know it's not the correct answer but, until I fathom it, it's the next best!