I have a Sony disk player fitted to my car that plays MP3 songs.
After I had it installed, I burned some CDs which contained a large number of tracks on each of them. Playing them I noticed that it wouldn’t play all of the tracks. Found that when it got to a point on the disk it would restart from the beginning thereby missing out a lot of tracks
Went through the manual and found out that you could only put 200 tracks onto the CD. Once I changed all the disks to that format, never had a problem again
Maybe it’s something similar?