Thanks ! I'll be trying those after work ! About the MAC address, I understand what you say, but I find this almost impossible that devices switches MAC adresses between them.. ?
My streaming laptop (windows) according to the router took the Nintendo Switch's name, and some other device took the only iPhone's name on the network... at the moment of writing this, my Linux Mint Desktop, Android phone and Windows work laptop all have their correct name...
EDIT: My streaming laptop is wired, and the name was mixed up this morning ! Other devices are indeed, on WiFi !