@mrcoco If you are connecting TV to Main Deco, try (for troubleshooting purposes) to connect TV to Satellite Deco. Temporary bring Satellite Deco to where TV is, and connect TV with Ethernet cable to...

@mrcoco If you are sure your TV is properly connected to Deco unit with Ethernet cable, Google "How to cold boot, reboot, restart, or reset your Samsung Smart TV" and see if that will help.

@mrcoco Your model of Samsung TV has Ethernet port. Bring Satellite X60 to Samsung TV and connected them with Ethernet cable. That would help to narrow the issue: is it WiFi connectivity to Deco mesh...

@1Steven I noticed slow WiFi 2.4GHz speed with my Deco mesh, which has M9 Plus and M5. Whatever I tested it with, I could never get faster than 80Mbps. Meanwhile, I am getting up to 650Mbps with...

@MikeUtan Hopefully M5 with manual configuration should be enough. In case it comes to buying Deco M9 Plus, its beta firmware discussed here: https://community.tp-link.com/en/home/forum/topic/574954...

@MikeUtan Well, and if that does not work you can try your original plan of making M5 Main Deco, but I doubt that would work either. You can try. Also, for the reference: Changing the Main Unit for...