Is your neighborhood have too many wireless networks which interfere with yours????
One of the most common complaints is that every time a neighbor puts up a wireless network your wireless network is slower or you get booted off.
The easiest thing you can due is change your channel on your wireless router. Almost all wireless networks have default channel of 6. Change your wireless network channel to something try channel 11 first.
If you have the money purchases a MIMO wireless router. This will overpower one radio access points.
The most common complaint about wireless interference is dropped packets. MIMO wireless routers let you transfer and receive at twice the rate because they have two transmitters and two receivers