Turns out this is a server side limitation in kodi+LibreELEC: LibreELEC # cat /storage/.kodi/userdata/upnpserver.xml <upnpserver> <UUID>e6ed9e0b-0580-e62c-4fc0-3a7e789f7575</UUID> <Port>1973</Port> <MaxReturnedItems>200</MaxReturnedItems> <UUIDRenderer></UUIDRenderer> <PortRenderer>0</PortRenderer> </upnpserver> Simply changing 200 into 400 fixed the symptoms.