MY WIRELESS SETTINGS
Connection Type : DHCP Client
QoS Engine : Inactive
Cable Status : Connected
Network Status : Established
Advanced DNS : Disabled
Wireless Radio : Enabled
802.11 Mode : 802.11n only
Channel Width : 40MHz
Channel : 9
Secondary Channel : 5
WISH : Active
Wi-Fi Protected Setup : Enabled/Configured
Auto channel scan
Transmission rate: Best (automatic)
Channel width: Auto (20/40 mhz)
Security: WPA Personal
Transmit Power: High
Beacon Period: 100
RTS Threshold: 2346
Fragmentation Threshold: 2346
DTIM Interval: 1
WLAN Partition: Unchecked
WMM Enable: Checked
Short GI: Unchecked
Extra Wireless Protection: Checked
WAN Port Speeds: Auto 10/100/1000Mbps
In Network and Sharing Center, my connection speed is listed as 1Mbps.
In D-Link wireless utility, my connection speed listed between 1 and 70 mbps (usually below 10 though), signal % between 5 and 20.
I did a speed test with Wi-Fi Inspector and it came back with a download speed of 327 kbps. It also indicated that no wireless network in range was using channel 9 or 5, though there were a lot of other networks (only 1 other draft n).
No idea what to do about it. Do I need to get one of the D-Link N Extreme adapters for my laptop to boost performance?
This jumped out at me right away. Do you even have a wireless N adapter in your PC? As for your other settings, they are almost exactly like mine and I have zero problems. Since you are running wireless N only, you might consider turning extra wireless protection off. Read the DIR-655 help file on that setting.
The only difference I can see between your setup and mine is that I have a D-Link DWA-652 XtremeN Notebook Adapter. I disabled the onboard wireless adapter, stopped using Windows wireless zero and anything Intel related.
Edit: My experience with auto channel scan has been outstanding. Without fail, anytime I have to reboot the router, it always picks a channel NOT used by the rest of the neighborhood. I also have short GI checked and WISH turned off but I seriously doubt if either of these settings would cause your problem.