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Forum Discussion
C7800 Wifi speed is slow
I just bought C7800 several days ago, because I need DOCSIS 3.1 model to support gig speed of Comcast. Then I notice the speed of 5G wifi only have 400Mbits and it should be near 900Mbits to 100...
What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and channel 44 on 5Ghz.
Try setting the Mode from max to one mode lower then max for each radio and test. You can disable the 2.4Ghz radio as well while testing on 5ghz.
Test with different wifi devices for comparison.
Hi,
I had the same exact problem. very similar settings (2.4G and 5G). I see at most 300Mbps. I once hooked up my ethernet cable to the router and c7800 does see close to 900Mbps on the etheret cable (i.e not a comcast issue).
I cannot see why this is dropping so much.
KG
Most current wifi AC supporting devices will not see anything near 900Mbps on speeds tests. Most will max out at around 400-500Mbps. Wired is preferred with testing of anything near 900Mbps ISP speeds.
karthiksg wrote:Hi,
I had the same exact problem. very similar settings (2.4G and 5G). I see at most 300Mbps. I once hooked up my ethernet cable to the router and c7800 does see close to 900Mbps on the etheret cable (i.e not a comcast issue).
I cannot see why this is dropping so much.
KG
karthiksg wrote:
I cannot see why this is dropping so much.
Do some research into real and imagined (advertised) wifi speeds.
Here are some sources on wifi speeds that I have stumbled across over the years:
The Difference Between Wireless-N, Wireless-AC, & Wireless-AD
What is the actual real-life speed of wireless networks ? :: SG FAQ
Welcome to the real world.
And that is without even asking about your own wifi clients.
I typically get 750+ Mbps on the C7800 on a 2019 Macbook Pro.
