@J_M_B In fact, my chromecat is behind another switch (TP-Link TL-SG108E V1) I have enable = - IGMP Snooping on Switch - IGMP Snooping on Router And now it's OK C'est formidable :-)

@Tony Thanks Tony With IGMP Snooping disable, it's now OK Regards

Hello When my PC is on WiFi, no problem with Simple Service Discovery Protocol (Chrome discovers Chromecast) ping 239.255.255.250 Envoi d’une requête 'Ping' 239.255.255.250 avec 32 octets de données...

Hello Everybody The bug is about priority settings Disable all "High Priority" choice on any device & reboot (you can do it with Tether app, see Client Tab) This doubles the speed on all interfaces...