This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.Speed issue with only one Deco M5 out of 3
This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
Hi all, I'll try to be as descriptive as possible here, please bear with.
I have 3 x Deco M5 AC1300 units.
- VM hub is set to modem mode
- Unit 1 downstairs is hard wired to my Virgin Media hub - No issues with speed (200MB +)
- Unit 2 upstairs - No issues with speed (200mb+)
- Unit 3 upstairs has a PC connected to it with ethernet cable - Issue with speed on both the PC and wireless (7 to 12MB)
What I've done so far.
- Ensured all Deco units are up to date
- Rebooted all Deco units
- Unplugged PC from Unit 3 (The one with speed issue), rebooted and left PC unplugged and connected a wireless device (to ensure PC wasn't causing the problem) - Slow speed
- Brought said wireless device downstairs so it connected to Unit 1 - No issues with speed
- Took wireless device back upstairs so it connected to unit 3 - Slow speed
- Tried different WIRED device (laptop) and connected to unit 3 - Slow speed
To summarise, it appears that I have an issue with just one of my Deco units, giving slow speeds on both wired and wireless devices.
Please could anyone offer any advice? More info maybe required, please ask 
You still haven't said if your run your Deco mesh in Router or on Access Point mode. If it is Router mode, this should work with the switch back in the picture:
That can also work in AP mode, but in AP mode you can also connect switch to Hub and Main Deco to switch, like in your original diagram. You can't in Router Mode.
@TP-Link_Deco Sorry for the crude drawing, please could you confirm if this setup would work? I can see this is the only wat to get a hard wire direct from the source because the current hard wire from unit 3 to PC is too slow.
Many thanks.
My two cents.
What you have can work, but only if you run Deco in Access Point mode.
Even then, this network diagram can be improved and simplified. Each Deco has two Ethernet ports, think of them as three-port switch, one port is used to connect Deco internals to, two ports are available and exposed.
With that concept of each Deco already hooked to its switch, this is what diagram can become:
Note that this setup will work for both Router and Access Point modes of your Deco mesh. You should get improved Internet speeds not just for Windows PC but also for any WiFi device connected to Deco M5 Unit 3.
You still haven't said if your run your Deco mesh in Router or on Access Point mode. If it is Router mode, this should work with the switch back in the picture:
That can also work in AP mode, but in AP mode you can also connect switch to Hub and Main Deco to switch, like in your original diagram. You can't in Router Mode.