TP Link Deco BE65 Pro download drops from 900+ to ~600 Mbps after a few minutes, upload stays full

TP Link Deco BE65 Pro download drops from 900+ to ~600 Mbps after a few minutes, upload stays full

TP Link Deco BE65 Pro download drops from 900+ to ~600 Mbps after a few minutes, upload stays full
TP Link Deco BE65 Pro download drops from 900+ to ~600 Mbps after a few minutes, upload stays full
Friday
Model: Deco BE65 Pro  
Hardware Version:
Firmware Version: 1.2.0 Build 20250718

Hi all,

 

I am hoping to see if anyone else with the TP Link Deco BE65 Pro is seeing similar behaviour.

 

I am on a 1 Gbps symmetric fibre connection. When I reboot the main Deco and run a speed test, I initially get:

 

  • ~900 to 940 Mbps download
  • ~900 to 940 Mbps upload

 

 

However, after about 5 to 10 minutes, without changing anything, the speeds settle into this pattern:

 

  • Download drops to around 500 to 600 Mbps and stays there rock solid
  • Upload remains at 900+ Mbps

 

 

If I reboot the Deco again, download immediately goes back to 900+, but then drops back to ~600 again after a few minutes.

 

Things I have tried:

 

  • Different test servers and devices
  • Turning off QoS and HomeShield
  • Disabling MLO
  • Reboots and fresh setup
  • Tried Access Point mode as well
  • Signal strength is excellent and upload is always full speed

 

 

This feels less like Wi Fi interference and more like some kind of routing, traffic shaping or firmware behaviour kicking in after boot.

 

Has anyone else with the Deco BE65 Pro or other Wi Fi 7 Decos seen:

 

  • Full speeds right after reboot
  • Then a consistent downstream cap a few minutes later
  • While upload stays maxed out?

 

 

If so, did you ever find a fix, or is this just a firmware limitation at the moment?

 

Thanks in advance.

 

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#1
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2 Reply
Re:TP Link Deco BE65 Pro download drops from 900+ to ~600 Mbps after a few minutes, upload stays full
10 hours ago

  @emon11 

Hi, thank you very much for the feedback.

It is suggested to test whether the 1.2.10 firmware here helps:

Deco BE65/BE65 Pro_1.2.10 New Firmware with Enhanced Stability & Interference Resistance

 

By the way, may I know your ISP?

How about the internet connection type on the Deco App, Dynamic IP or PPPoE?

Wait for your reply.

Best regards.

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#2
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Re:TP Link Deco BE65 Pro download drops from 900+ to ~600 Mbps after a few minutes, upload stays full
3 hours ago

Hi  @David-TP,

 

Thanks a lot for your reply. 

 

I will try the new firmware and let you know if it fixes the issue. 

 

My ISP is Lila Connect in the UK, I have FTTP with Dynamic IP.

 

Many thanks. 

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#3
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