Technician helping fix Tuya not discovering devices in Smart Life app

Steve H.

Expert ★★★★★ 27,853 satisfied customers

Specialities: Mesh Wi-Fi slowdowns, poor roaming after adding a node, backhaul congestion, channel overlap, dual-band and tri-band mesh behavior.

Why WiFi can get worse after adding another mesh node and what to check first

Technician avatar Technician
Let’s start with the safest checks first. When whole home WiFi gets worse right after adding one more mesh node, the new node is not always “bad” — sometimes it changes how devices roam or how traffic is carried between nodes.

I do not want you to move everything around yet. One small detail can tell us a lot: what feels worse now — speed, coverage, video calls, or devices hanging onto the wrong room?
Customer
Speeds dropped and some devices seem confused. My phone keeps showing full bars, but pages load slower and my laptop sometimes clings to a farther node.
Technician avatar Technician
That helps. “More bars but worse performance” often points to placement or backhaul, not the internet plan itself.

Before the extra node, was the system mostly stable? And was anything else changed at the same time, like a firmware update, a new ISP gateway, or moving the main router?
Customer
It was pretty stable before. I added the new mesh unit two days ago and the app also updated around the same time. I did not change the modem.
Technician avatar Technician
Good to know. This is common after changes, but we should rule out risks before assuming the app update caused it.

A few calm checks:
• Is the new node one room away from another node, or much farther?
• Is it near a TV, metal shelf, microwave, or thick wall?
• Does the app say the new node has a strong connection to the main unit, or only fair?
Customer
It is in the hallway near a cabinet and maybe one room away from the older node. The app says the connection is fair, not excellent.
Technician avatar Technician
That “fair” reading matters. Adding a node too close can create overlap and awkward roaming. Adding it too far can weaken the backhaul and slow the whole mesh system down.

I do not want you to try something that could make it worse, like factory resetting all nodes. Let’s stay with safe observations first.

Is your mesh dual-band or tri-band, and are the nodes using wireless backhaul or Ethernet?
Customer
It is dual-band and wireless. No Ethernet between the nodes.
Technician avatar Technician
That fits the pattern. On a dual-band mesh, the same WiFi bands often handle both your devices and the traffic between nodes. After adding one more mesh node, the network can look larger but actually become busier.

Here is the key question: are slowdowns worst near the new node, or everywhere in the house?
Customer
Mostly near the new node and also in the room just beyond it. The far bedrooms did not really improve either.
Technician avatar Technician
That usually points more to node placement or roaming behavior than to your ISP line.

Let’s keep it simple. In the mesh app, can you see whether devices are attaching to the new node when they probably should not? Some apps show a device list under each node, and that can reveal sticky roaming or load imbalance.
Customer
Yes. My laptop sometimes joins the hallway node even when I am in the living room next to the main router.
Technician avatar Technician
That is a useful clue. The network may now have too much overlap, so devices are making poor roaming choices. Another possibility is that the added node changed the channel plan and introduced more interference.

Trust moment: we are not trying to “tune everything.” We just want to identify whether this is a placement issue, a backhaul issue, or a settings issue.
Customer
I was worried I bought the wrong extra node. Could the update have done this too?
Technician avatar Technician
It could, especially if the update changed channel selection, band steering, or roaming sensitivity. But the timing with the extra node still makes placement and wireless backhaul the first things to rule out.

Safe checks that tell us more:
• whether the new node reports only fair backhaul
• whether nearby devices keep switching nodes
• whether speeds improve when you stand close to the main unit instead of the new one
Customer
Yes, close to the main unit the speed is better. Near the new node it is not as good as I expected.
Technician avatar Technician
That leans strongly toward the added node not having a clean enough link to help. More mesh nodes do not always mean better WiFi. If the new unit is in a weak or noisy spot, it can repeat a weak signal and make the whole home WiFi feel worse after adding a node.

One more thing: does the app offer separate labels like “signal quality,” “topology,” or “optimization”? Those screens sometimes show whether the new node is daisy-chained in a poor path.
Customer
There is a topology screen. It shows the new node linking through the older satellite, not directly to the main router.
Technician avatar Technician
That explains a lot. A weak daisy-chain can add extra hops and reduce usable speed, especially on dual-band mesh systems. It also makes roaming less predictable because clients may see a “near” node that is actually a slower path.

Let’s keep the next steps safe and reversible: check placement first, then observe whether the app reports a stronger link and more sensible device attachment. That tells you more than chasing random settings.
Customer
That makes sense. So the main idea is to confirm the node is actually helping, not just extending the name of the network.
Technician avatar Technician
Exactly. The best mesh setup is not the one with the most nodes. It is the one where each node has a healthy link, devices roam sensibly, and the app does not show weak backhaul or odd topology.

If a single added node caused worse WiFi, the first suspect is usually where it sits and how it connects, not a broken internet line.

Quick answer: the accepted fix

Accepted checks when whole home WiFi gets worse after adding one more mesh node usually focus on safe diagnostics, not major resets. Confirm whether the new unit has a strong backhaul link, whether the topology created an extra wireless hop, and whether nearby devices are attaching to the wrong node. If the added point is too close, too far, or placed near heavy interference, overall performance can drop instead of improve. Observe one change at a time and use the mesh app to compare signal quality, client attachment, and speed near each node.

Why adding a mesh node can make WiFi slower instead of better

A larger mesh network is not always a faster one. On dual-band systems, each added node may share the same wireless space for both device traffic and backhaul traffic, which can reduce real speed. If the new satellite is placed in a weak spot, behind heavy furniture, or too close to another unit, clients may roam poorly and the network may spend more time managing overlap than helping coverage. This is why people often notice that WiFi got worse after adding a mesh node even though the app shows more coverage.

What to check first before moving settings around

Start with the mesh app, not advanced router menus. Look at topology, signal quality between nodes, and which devices are connected to each point. If the extra node is daisy-chained through a weaker satellite or reports only fair backhaul, that can explain slower speeds and sticky roaming. A short walk test with your phone or laptop near each node can also show whether the new unit is actually improving service in that area.

Whole home mesh WiFi feels worse after one more node — safe checks

Start with placement, backhaul, and roaming clues before assuming the hardware is faulty.

Helpful checks include reviewing node topology in the app, comparing speed near the main router and the new node, and noticing whether devices keep attaching to the wrong access point. If your mesh is dual-band and wireless, an extra hop can reduce performance more than people expect. Keep notes, make one reversible change at a time, and give the network a little time to settle before judging the result.

Disclaimer: This information is AI-generated and intended for general guidance only. Do not open devices or attempt unsafe electrical work. For advice specific to your Tuya/Smart Life device model and router settings, please consult a verified expert on Whizz-Tech or the manufacturer’s support before making decisions.

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FAQ

Why did my mesh WiFi get worse after adding another node?

That usually points to placement, backhaul quality, or extra overlap between nodes. More mesh points can increase coverage, but they can also add wireless traffic and poor roaming if the new one is not in a clean spot.

Did this happen after a firmware or app update?

It can. Updates sometimes change roaming behavior, channel selection, or optimization settings. But if the slowdown started right after the new node was added, placement and topology are still important to rule out first.

Is this a settings issue or bad hardware?

Bad hardware is possible, but it is not the first guess. A fair backhaul link, a weak daisy-chain, or clients attaching to the wrong node are more common reasons than a failed mesh unit.

Can this be checked safely at home?

Yes. Use the mesh app to review signal quality, topology, and device attachment before changing advanced options. Small, reversible checks are safer than resets when the goal is to understand what changed.

Sources

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