Hey there, I'm using the same router AC1200 and faced the same problem last time. Wifi 5GHz stuck at ~100Mbps and LAN 5e stuck around ~150Mbps on 500Mbps package.

For me it is because of the NAT Boost is disabled.

Advance > System Tools > System Parameters > NAT > NAT Boost (make sure checkbox is checked)

Once enabled, Wifi 5GHz can go up to ~390Mbps and LAN cat 5e ~500Mbps. Let me know if it works for you, thanks

I can't speak for DIR-882 but I'm currently using DIR-850L as Access Point even thought the current firmware doesn't have dedicated AP Mode to choose from. Just plug LAN from main router to LAN of your AP > disable the DHCP > set a static IP for the AP so that it doesn't clash with the main router. That's it.

I'm using the same router AC1200, you should be able to get the PPPOE username and password as per screenshot below. Router login URL and credential should be under your router.


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Refer to this video, https://www.youtube.com/watch?v=mDLn9rJX76E

If you want all of your wireless devices to automatically reconnected after this setup, use the same name and password for both 2.4 and 5GHz ssid.

Should be the same issue that I faced last time with my AC1200. See my previous reply below.

If you have extra pc or laptop, its better for you to do a network thoughput test first by using tools like iperf. Then you can identify the bottleneck/issue, its either:

1. Your ethernet adapter
2. USB port of your laptop
3. Your router/ap/switch that you plug the ethernet cable on
4. Defective LAN cable

This post has been edited by wirelessbuyer: Oct 15 2018, 08:01 PM

Nap? If you want to access the 'Advance' its at at the top tab navigation there

Quick Setup | Basic | "Advance"

Ahh, you need to login to your router to change the setting that I've mention above not in your windows.

URL and username/password to login to your router usually printed at the bottom at your router.

Your result shows that your local network is fine and can achieve 900+Mbps.

The bottleneck should be on your router or incoming bandwidth from modem.

Try to do direct pppoe from your modem to your laptop to bypass the router as FusionXY suggestion above.

For your LAN issue, it seems similar to the video below, where 350Mbps is the limitation of USB2.0 of the laptop:

https://youtu.be/pL3e06Z1aws?t=210

Router (gigabit) -> Cat5e -> Ether adapter USB3.0 -> Laptop USB3.0 --- able to get ~500Mbps up down
Router (gigabit) -> Cat5e -> Ether adapter USB3.0 -> Laptop USB2.0 --- only able to get ~350Mbps up down

Sry, I was just pointing at the video example as he is showing 500Mbps package speed, but with USB2.0 he is bottlenecking the connection to 350Mbps. But on your case, you should be able to get ~1000/500 Mbps with your current package.

Now it seems that your issue is not related to the this example above.

Hey, are you running on windows 10? If yes, can you check whether your ethernet adapter is running on 2.0 or 3.0 speed

Setting > Device > Bluetooth & Other Device > *find your ethernet adapter*

EDIT: Ahh I didn't realize your latest reply that you can achieve 600Mbps+, yours should be 3.0 then

This post has been edited by wirelessbuyer: Oct 16 2018, 10:34 PM


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Just notice your previous reply that now you can achieve more than 600Mbps, even though not yet gigabit speed as per your 1Gbps package

I'm using AC1200 and I think it depend on your device as well to achieve that wifi speed.

- Laptop with build in wireless card Intel AC8260(2x2) - Max reach 400Mbps
- Lenovo p2 phone (1x1) - Max reach 300Mbps
- Sony Z3 compact (1x1) - Max reach 200Mbps

From your stated configuration you should already running 1Gbps connection (but will be limited to your 500Mbps speed package)

- Router DIR850L (gigabit capable)
- Lan Cat 6 (gigabit capable)
- Motherboard (gigabit capable)

Could you check your network adapter speed whether it is showing 1.0Gbps or 100Mbps?

Can refer here, https://goo.gl/Vfq65o

Or could you try to change it to 1.0 Gbps Full Duplex? See whether it helps?

Another thing you can try is to use other cat 5e or above LAN cable. This happen to me before where fake cat 5e (which is cat 5) limit my network speed to 100Mbps instead of 1.0Gbps

Usually in the router box, they will provide you with a free cat 5e cable or above. You can use that to perform the test.

Actually his motherboard do support gigabit speed on LAN, as per this link, https://goo.gl/oTrjTW (I've checked for all revision as well)

I would suggest for you to check the ethernet adapter speed (sometimes called as link speed) on your windows machine first. Refer here, https://goo.gl/Vfq65o. Check whether it is showing as 1.0Gbps or 100Mbps?

From the previous discussion, the most common issues that is bottlenecking the speed is as below:


If all of the common issues above is not related to you, then you might need to connect directly to your modem from your PC via LAN (this will bypass the router). Just setup a PPPOE connection on your windows with your PPPOE username and password. Here, you can perform speedtest to check the 'raw' speed that is coming from the ISP.

I hope this will help.

First of all what is your ethernet adapter speed on your pc? https://goo.gl/Vfq65o

1. The speed and duplex setting can be find here.
Windows setting > Network & Internet > Change adapter option > Right click your LAN adapter (not wifi adapter yah) > Properties > Configure > Advance tab > Look for speed & duplex > It should be Auto Negotiation but try to change it manually to 1Gbps and retest. Also try to disable the option for power saver, energy efficient temporarily and see if there is any changes.

5. Try to change manually to 1000Mbps full duplex temporarily and restart the router. See whether it helps

Can you try with other cable? Must be cat 5e or above, you can even use the cable bundle together on the router box to perform the testing