Album Art All Messed Up - How To Restore

I mess up my album art and I’m looking for suggestions on how to fix it.
Currently running Volumio 2.457 and I have ripped all my music and The album art was displayed just fine on the playback page until I did something that mess it all up. Instead of being nice and sharp it now looks blurry (see attached image)

To to get in this sorry state I went into My Music settings and changed the Web Album Art Size to SMALL and now it’s all blurry. I tried to reset the Web Album Art Size to all the other possible values but I can’t get it to go back to it’s previous sharp image.

What can I do fix this?
Screen Shot 2018-09-25 at 10.44.55 PM.png

After setting back to large or very large etc did you try a rescan rather than update?
It’s happened to me before but did fix after a rescan.

Yes but it didn’t work. But after doing all that I starting playing another album… presto!.. everything was back to the way it was.
So, maybe your suggestion did work and the messed up one was just cached and switching to the new album is what picked up the change. Anyway I’m not touching it anymore.
Thanks.