It is near impossible to say that you can resolve this issue completely. Instead, you can reduce wireless interference at some points. For that, you have to change Wi-Fi channels, the three WiFi channels (2.4Ghz)1, 6, and 11 are considered the best channels as these channels have no frequency overlap with each other.  If you router supports the 5Ghz band as well, then the recommended WiFi channels are 36, 40, 44, 48, 149, 153, 157, and 161.