Internet speed worse with better Wireless Adapter

silenttrigger · Sep 26, 2015

Issue:

I am currently using a TP-Link N900 model: TL-WDN4800 network card in my gaming PC. I am averaging about a 50 to 60% signal strength right now which is decent for my gaming needs.

I was given a free TP-Link AC1900 Model No. Archer T9E.

After installing the Archer T9E, I have been getting a really poor signal. averaging 16 to 20% strength with constant signal dropping.

I by no means know anything about AC etc. so any and all guidance to help maximize my signal would be great. Please let me know if you guys need any other information!

My PC setup:

ASUS P8P67 PRO (REV 3.1) LGA 1155 Intel P67 Mobo
Intel Core i7 2600K Sandy Bridge 3.4GHz
G.Skill Ripjaw Series 16GB RAM
Gigabyte GeForce GTX 770
Windows 10

My ISP:

Timewarner - 100/10Mbps

Modem:

Netgear CM400 High Speed Cable Modem

Router:

Netgear AC1200 Smart Wifi Router Model No. R6220

Ralston18 · Sep 27, 2015

As the Archer T9E was free would you suspect that the source (donor) had some problem(s) with it?

That said I would double check the physical installation and the antenna connections.

May need to update the drivers as well.

Could be that the Archer is not playing well with the Netgear devices. Or the current band/channel combination now being used has more interference.

Also here is a link to the manuals:

http://www.tp-link.com/en/download/Archer-T9E.html

You need to check the set up with respect to your system and network. E.g., select Speed & Duplex setting versus Auto-Negotiate.

You will need to learn a bit more about it all and doing so could possibl identify and solve the problem directly. If not it could, at least, help you discover some additional information to post.

bill001g · Sep 27, 2015

Were you using 2.4g band on your old adapter it has much better signal strength than 5g and 802.11ac only runs on 5g.

silenttrigger · Sep 28, 2015

I am currently using my old wireless card since the signal is better. It runs on 5Ghz. According to my TP Link utility, I'm on channel 149 (5G), Rate is 300Mbps, Wireless Mode: 802.11ac.

The T9E Archer was running on 5Ghz, channel 149 (5), but the rate was almost half. It was also running on Wireless Mode: 802.11ac.

bill001g · Sep 28, 2015

You would have to see if the computer will tell you what is called the MCS index so you can tell what is being negotiated.

300m is usually 802.11n running 40mhz channels with a mcs index of 15.

802.11ac tries to use 80mhz of bandwidth to get the high speeds. If there is interference in one or more of those channel it may actually perform worse than running at 40mhz with no interference.

This is why on 2.4g 20mhz runs faster than 40mhz many times

You might try to force your router to only use 20 or 40mhz.....this in effect makes it into a 802.11n router though.

http://mcsindex.com/

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Internet speed worse with better Wireless Adapter

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