19000 files in folder mode - Shuffle only between 1 and 2500

Hello. I have 19000 files on my Clip Jam, I am using these in folder mode. But if I use the shully function, it only shuffles between file 1 and 2500. The files above 2500 arte not recognized? Anyone an idea? Thanks in advance

Long ago I decided to only use a 16 gb micro SD card in my SanDisk Clip Sport and Clip Jam. Files beyond 2500 can create unexpected problems. My solution is to buy more players and stick with the smaller size memory cards.