I can try doing this now. I had this issue on 6.11.5. I tried all suggestions and nothing seemed to work. I think the issue might be related to libvirt. I saw a log in that section of settings I think, where it kept throwing libvirt errors. All I was trying to do was get smb working properly for Synology after noticing files not having certain permissions. I'll reply back if this did indeed fix my issue.