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Poor WiFi speed compared to Ethernet
I have a N300 C3000 cable modem+wifi router connected to comcast xfinity cable internet. When I connect any device using the ethernet cable, I get speeds of upto 225 Mbps (as against the promised 150Mbps). When I connect any device using Wi-Fi, I haven't been able to clock higher than 25-30 Mbps. The cable modem + router meets all the specifications of my comcast xfinity connection. The device is even on the supported devices list for my plan. I have tried fiddling with lot of settings with no improvements whatsoever. Settings I have tried: Changing fragmentation length Changing CTS/RTS threshold Changing MTU size changing channels, Wi-fi speed was in fact poorer in absolutely unoccupied channels. Devices I have tested Wi-Fi speeds with: Lenovo g50 laptop running windows 10 and Realtek RTL8723BE 802.11n Wireless LAN Motorola Moto x, supports 802.11 a/b/g/n/ac Apple iphone 5s, supports 802.11 a/b/g/n Google Nexus 5, supports 802.11 a/b/g/n/ac Apple iphone 6, supports 802.11 a/b/g/n/ac and other mobile devices. Tests have been done at close range, medium range and long range with and without obstacles in between and with as few as 1 to as many as 6 devices connected at te same time. The speed doesn't vary much. The modem+Router has been running the latest firmware version as well: V2.02.08 I have almost given up on getting decent Wi-Fi speeds. Currently I am getting only about 12-13 Mbps. Also, this is a replacement device. I thought there might have been a hardware issue and had asked for a replacement. The replacement device hasn't unfortunately been any better. The issue cannot be with the cable connection as I have been consistently getting speeds over 200 Mbps on every wired device I have used to test. The problem seems to be on the Wi-fi router side of the device. I tried to switch to 5ghz but the device doesn't seem to support 5ghz bands or the settings didn't have an option to switch, not sure which. Please help me fix this issue. I would be happy to get 50-60 Mbps on Wi-FI Thank you