The link in your post is considered site promotion. Repost without that for further discussion.
I have a 2 router system that has been fluctuating the connection to the internet. I have a dlink wired router connected to the cable modem. The dlink is hardwired to a linksys wireless router upstairs. Is there any setting changes in either router that I need to make to keep the connection constant as it has been dropping up to 20 times per day.