immediately after I change an unidentified albums name Roon crash down with something wrong and need a restore from previous backup. it happens every time I try to do this editing on the album.
This appears to be, shall we say, an unconventional music library. And it is exceeding 100,000 tracks. That probably is pushing the envelope on a Nucleus, especially if it is stock specification with 4 GB RAM.
As other used have suggested, this Roon Server machine is likely underpowered for a library of this size and makeup - this will be particularly problematic if you’re using a large number of Zones or heavy DSP in MUSE. We generally recommend above upgrading to 8GB of RAM on Nucleus with a library of over 100k tracks.