You might be able to increase the channel on the web. Type in your ip address into the address bar(While being connected to the wifi). Or just find it by:
1.Open CMD(no need for administrator mode)
- Type in "ipconfig"
- Copy the default gateway and paste it into the address bar
You should be able to increase the power for the router there. And you can also increase the channel. Power saving mode reduce the speed DRASTICLY, and most router have it default on, so turn the power saving mode off(it increase my download and upload speed by 20%).
For most router the default login is
Username: root
Password: admin
Or if there is only a password box then just type admin or your wifi password.