Having the exact same issue on 400mb spectrum with my two week old A7. Sometimes speeds will be normal immediately after a reboot but eventually slow to 200-250. Firmware up to date. Wired and wireless both affected.

@t.l 

Hi Bud, I don't know if this might help, but I wrestled with this for over a week on an Archer C8, maybe it applies to the Archer C7.

New 500/50 service, and no matter what I did, I couldn't get more than 330 down through the router.  Direct wire to modem, I'd get 550+ down.

I strangled the router's settings in every way I could think, QoS, Nat Boost, double checked update firmware, hard reset, soft reset, and on and on.

Then this:  In the router's admin screen, I turned off Nat Boost, disabled all the ALG checkboxes, and enabled QoS.  Checked results, still slow.  I turned all the ALG services back on, then enabled Nat Boost again (takes a bit of time for router after you enable that, makes you wait.  Save my settings, back to the internet speed test, and *boom* -- all problems solved.  All the wired-to-router computers were getting 550+ speeds from the internet.

Go figure. I can't say that's what "fixed" it- all I can say is it's not broken anymore.

@StevenRN 

StevenRN wrote

@t.l 

Hi Bud, I don't know if this might help, but I wrestled with this for over a week on an Archer C8, maybe it applies to the Archer C7.

 

New 500/50 service, and no matter what I did, I couldn't get more than 330 down through the router.  Direct wire to modem, I'd get 550+ down.

 

I strangled the router's settings in every way I could think, QoS, Nat Boost, double checked update firmware, hard reset, soft reset, and on and on.

 

Then this:  In the router's admin screen, I turned off Nat Boost, disabled all the ALG checkboxes, and enabled QoS.  Checked results, still slow.  I turned all the ALG services back on, then enabled Nat Boost again (takes a bit of time for router after you enable that, makes you wait.  Save my settings, back to the internet speed test, and *boom* -- all problems solved.  All the wired-to-router computers were getting 550+ speeds from the internet.

 

Go figure. I can't say that's what "fixed" it- all I can say is it's not broken anymore.

I just upgraded my comcast/Xfinity service to gigabit (1 gig down / 35 mbit up).  When I run comcast speedtest directly connected to modem, I get 700-900 mbit down / 40 mbit up).  When I connect through Arched a7, I get 300 mbit down / 40 mbit up).  I tried what you suggested but only saw further speed degredation.

Clearly, something in the a7 is limiting download speed.  I'm running out of ideas short of trashing the a7 and getting a router that's really capable of gigabit speeds.  Has anyone had any luck getting high speed with this router?  If so, how?

I had a similar situation. As a result, the provider was to blame. Although he initially denied that technical problems were on his side.

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@Vittorio71 

When you say the provider, I assume you mean the ISP.  In this case, I can get near gigabit speeds when I connect directly to the modem (800+ Mbits).  But when I connect through the A7 router, my speed drops to about 300 Mbits.  This bootleneck seem to be in the router.

Today I plan to reset the router to factory reset condition and test again.  I suspect some settings in the router are slowing the throughpiut down.

@StevenRN 

I was experiencing slow wan to lan throughput with the Archer A7 after I upgraded my comcast service to gigabit.  my typical throughtput was about 300 Mbits.  I'd been round and round with TP-Link people but got nowhere.

Today I realized all of my testing had been with IPv6 enabled.  So I decided to see how well IPv4 performed by disabling IPv6 in the router.  Suddenly my speed has improved to between 700 and 800 Mbits.  As a further test, I ran speedtest on two computers simultaneously and the combined throughput was over 900 Mbits.

You might want to try running an IPv4 network to see what your performance does.

@dmitch. 

What speed are you trying to get?  I'll be very curious to see if your results are the same as what I've seen.

I did hear from TP-Link on this topic and they've told me that IPv4 has hardware assist, while IPv6 is processed purely by the processor.  The irony is that the IPv4 hardware assist is for NAT.  IPv6 doesn't need NAT.  The feature is accessed in the Advanced:System Tools:System Parameters screen.  It's called 'Enable NAT Boost'.

@dmitch. @jas00 

As I mentioned, I am using an archer c8-  had the limited download speed (275-300 mbits on 500 mbit service).

I did that whole dance of disabling everything, rebooting, enabling only what I needed and at some point, after the reboot and change, it all worked.

It still does, even though I later put DDWRT on it.  When I first did that, I had to go through the dance too; and I remember at some point I had to push the wifi button on the side to correct a problem with not seeing the login screen or some such, but that worked too. 

So, it worked on TP Link's firmware after massaging, and works fine on DD-WRT  as well (you have to make sure, if using third party that you absolutely have the right version).

From what jas00 said, Looks like the a7 did the same thing.  I don't THINK that if you re-enable IPV6 later that it would slow it down again; it didn't for me.  But part of the mix may be disabling it the first time.  

I can't say with certainty what fixed it, but killing everything, even stuff you want to keep (like NAT boost) rebooting, then re-enabling minimally is really likely to get the job done.

Let me know if it worked, guys ;-)

Steve