Hi @Henk1 and all, We found that there are some issues reported by the end-users with JBL speaker, even without Deco unit. Could you please try to disconnect the speaker from the Deco wifi network...

@shankarr Hello, we can do some troubleshooting as for the slow speed issue. What is the model number of your AC1600? It starts with Archer. What is the bandwidth you paid for your ISP? What is the...

@SimonSimon Hello, try to change another PCI-e slot. With it plugged in, please verify whether it can be detected under computer management-device manager-network adapters or other devices. And you...

@Jaybriel Hello, you can find a suitable driver online with the chipset of the network adapter, which is Realtek RTL8192EU. Have you ever tried to change another USB port? Try to move them closer to...

@J40NYR Hello, what is the operating system of your computer? How far away between the router and the adapter? What about the signal strength? Have you ever tried to change the wireless settings on...

@Jordan_Stewart Hello, does the ping spikes affect the actual performance of the Archer C9? From the picture attached, the higher latency with connected to the ISP modem directly, first, you can...