Crash & restart upon adding large folder to playlist

Heya. So a while ago I made my first Volumio project and am pretty satisfied by it, except for the fact it crashes whenever I try to add my entire music folder to the current playlist or just play from a large folder such as my metal one.

Recently, I made a smaller volumio system and the issue is the same despite the fact I have upgraded from an 1a power adapter to a 2a. I thought that was the issue for a bit but it turns out not.

Both systems are under the last version, both using self-powered USB external disks, on a raspberry pi zero 2w.

Any idea what could the problem be? Thanks in advance!