Your WIFI router may receive many interferences from your neighborhood, and these interferences change day by day. To have the best performance, from time to time your WIFI router need to be re-configured. Support part of Cisco Linksys Support part of DD-WRT Support part of OpenWRT Support part of ASUS Support part of Tenda Support part of D-Link Support part of TP-Link Support part of Huawei And others ...