@Disappointed21 

I don't even have any option for QoS. QoS settings just don't exist for me.

I've tried factory reset and deleting the app. It seemed to work at first but when I logged in the Tether app to add an extender (RE315) everything slowed down again (RE315 was factory reset as well). I probably need to create a new account just for QoS to be disabled by default.

@JackMx 

Ah if you need to use the Tether app, then you're out of luck unfortunately. This issue has existed for over a year with no update to the firmware or Tether app. Opening either the app or the QoS settings page on the router will make it useless again.

Hi All,

I hope this will be of help to someone reading. I've pulled my hair out trying to resolve this issue. I have the AX50/3000 connected directly to the ONT and was only getting 300Mb/s on ethernet connection despite a gigabit connection. ISP modem/router was delivering +900Mb/s speeds but even in bridged mode the TP Link appeared to be throttling.

I had also tried all variants of QoS settings (no toggle off) and no device prioritisation but the problem persisted. 

My solution was to manually set the total bandwidth limits to 999Mb/s as per screenshot below (max allowable) and set the QoS setting to Standard. Problem was solved immediately.

Really hope this helps someone who was in the same situation.

@Shaun_L I deleted the Tether app & rebooted the AX50 & it didn't do anything.  No better, no worse.  I have 1200 gigabit Xfinity service and pull 230 mbps down via LAN & 130-180 mbps wifi.  Sucks.

@The_Greenman hey there, you have to actually factory reset the router to clear up the issue. A reboot won't do it. Then don't set the tether app up after the factory reset.

TP Link, can you PLEASE push a temporary fix for this in a firmware just to let us toggle QoS off completely ?? Is it really that hard?

If I use fast.com to do a speedcheck I am capped at 300mbps. If I then flick my device to get priority it jumps to 500mbps (my ISP speed) and then goes back down to 300mbps. It 100% is the QoS that is throttling the speeds. In fact, even if you don't flick the device in to priority and just jump between the 'device priority' and 'application priority' tabs it still makes it jump up as it looks like it's refreshing the data or something.

PLEASE. I can't use my BT Router because it doesn't let me split my bands, where as the TP link one does.

Failing that, can I get a refund ? Or even send me a different model.. Because this is unacceptable.

  @AndyG117 not sure if you've read all the posts but the immediate fix is to factory reset your router and then DON'T set it back up with the mobile app. Do it the traditional way through the router web page. Once you link it to the mobile app you appear to lose control over QOS. I've even been able to turn QOS on and off with it staying off doing it through the web page. The key here is the mobile app and once you're in this situation the only known recourse is to factory reset it.

Many of us have been waiting a long time for a fix from TP Link. Unfortunately things being what they are there is no sight of a fix incoming and you basically have 3 options:

1. Accept it as is

2. Go through the factory reset and don't link it back to the app

3. Purchase a new router

With this issue in my rearview mirror this router is an otherwise decent router. I get great range and speed out of it and it is a nice size. It does run a little hot but this ultimately seems to be of 0 consequence. I would really recommend going through the factory default steps and setting it back up, it is most likely something you can resolve in 20-30 minutes.

  @FearTheClown Hey, yes I read literally hundreds of posts about the issues and the 'fixes' but resetting doesn't work for me, not sure why. I've purchased a NetGear router and will sell this one on eBay. I'll accept it and never buy TP link again wether its routher or power plugs or whatever they do.

Thanks anyway !

  @AndyG117 no problem I totally get it! I'd be doing the same thing had this not resolved the issue for me. Hopefully you have better luck with the Netgear!

  @McCaff

It works 100 %. Thank you !!!