Windows 7 or 8? Try to install the driver only and connect to Wi-Fi using Windows built-in utility. http://www.tp-link.com/en/article/?faqid=306

Sounds like DHCP is still enabled on WR710N. Upgrade the latest firmware first. Later reset and reconfigure it. Change Smart IP to Static IP(on Network---LAN page) and change the IP address to...

pt_jr, the model number is the same? Latest firmware already? Tried a different PC to test the speed?

Cannot open the link. i sometimes notice that the internet connection is a bit slow for some period of time. It takes time to open a webpage? Or you did a speedtest or downloaded something to compare...

Zaph, did you try different channels? Change channel width to 20MHz or 40MHz to see if it it more stable...

Upstream and downstream has nothing to do with wireless connection...But the actual wireless connection speed is slower than wired connection normally.