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I have a Asus Dark Knight RTN66U. Driver Updates Windows Vista - Apps. I have a 50 Mb/s down 25 Mb/s up connection through my ISP.

The router was working perfectly fine until recently. I received nearly all of my 50Mb/s down and 25Mb/s upload connection. For some reason my download speed has become slow and erratic. I don't get any higher than 25 Mb/s Download on speedtest, and sometimes the download drops to as low as 4 Mb/s. My upload speed remains perfect, however.

I am still getting 25Mb/s upload speed, sometimes a little higher. I have taken a screencapture of my recent speedtest results. You can see that my download speed is very inconsistent, whereas my upload speed is very fast: The problem is not my internet connection. I have tried speed testing a wired connection and am receiving a constant 50M and 25 up.

I have updated the router to the latest firmware. I have also tried changing the wireless channel.

Both have not helped the download speed. Can anyone suggest what the problem may be? Any possible solutions? Perhaps the router is defective?

Perhaps there is some sort of wireless interference? Thank you for your help - Make and model of motherboard- z77 extreme 4 - Make and model of power supply - corsair corsair tx650 v2 - Make and model of USB or PCI Wifi adapter - Etekcity High Power 802.11 B/N/G 300M USB Wireless 1000mw Wifi Network Adapter with Dual Antenna - Operating system and driver version - Windows 8.1.

I noticed this happening very recently on wireless. I had never noticed before. I was running 3.0.4.270 I updated the firmware. Has anyone gotten a solution?

I'm setting up a new Asus RT-AC68U. I let it update to the latest firmware. 2.4 GHz wireless speeds were slow, only 2 to 3 Mbps down when they should have been over 40 Mbps. Upload speeds were normal at 11 Mbps.

I did a hard factory reset by pressing the recessed recess button for over 5 seconds and reset up the router. That took care of the 2.4 GHz speeds as far as Speedtest was concerned: around 44 Mbps. However, actual FTP download speeds through the wireless are still way too slow. I still have to look into that.