Despite its promising specifications, the TP-Link Deco BE11000 Mesh Router falls short in several critical areas.

1. Connection Stability: One of the most significant issues is the frequent connection drops, including the inability to maintain stable connections with the Deco satellites. This undermines the core function of a mesh router.

2. App and Satellite Indicators: Although the app often indicates that satellites are connected, the physical devices frequently show a red light, signaling a disconnect. This discrepancy causes confusion and frustration.

3. Setup Experience: Despite extensive experience with WiFi and network setups, I found the initial setup process notably difficult. The device struggled to connect to the internet for initial setup, hindering account authentication and further configuration.

4. Configuration Limitations: The router does not support setup or configuration through a web interface, requiring the use of a mobile app. This app is overly simplistic, lacking advanced settings such as band channel selections, which many users expect.

5. Wired vs. Wireless Backhaul: Even with a Cat 6A cable connection, the satellites default to a wireless backhaul with no option to force a wired connection. This limitation can negatively impact network performance and reliability.

6. Customer Service: TP-Link's customer service is notably unhelpful. The support provided is subpar, making resolving issues a cumbersome and time-consuming process.

Overall, the TP-Link Deco BE11000 Mesh Router may appeal to some due to its price. Still, it fails to meet the needs of most users, offering poor reliability, limited configuration options, and inadequate customer support.