Ahimnotuz

Hi, I have a 2017 Audi A4 with MMI Radio. I have spent hours organizing my music on an SD card (32GB) including album art and tags. The issue I have is that it all works great for some time, reads and shows the music info and tags, and with great sound quality, but then, after a while, it starts removing the album art, all other tags are the same and do not change, but the MMI player stops showing the album art. I have tried with ID3 versions 2.3x and 2.4x, anyone knows why this may be happening and how to fix it? I just hate to have so many nice album art and not being able to see it.