RAX200 download speed slow

[trialcritic]

I moved from an X10 router to a new RAX200. I have a 1150v modem. 

When I had the X10, I got a speed of 935 mbps.

My ISP plan has a download speed of 1200 mbps.

After the setup to RAX200, I get 710 mbps 😞

My settings are:

• Enabled AX

• Enabled OFDMA in all bands

• Disabled Smart Connect

• Disabled 20/40 MHz coexistence

• WPA2/PSK security in all bands

• Disabled QoS

• No link aggregation from modem to router

Any thoughts on how to fix this? Thanks

[plemans]

How are you testing speeds? 

What website and device? 

Testing wired? Wireless?

Many site struggle with speeds >500mbps and will give unreliable results. 

[trialcritic]

I tested with 

• wired connection of my laptop to the router, with using Ookla speedtest and Xfinity speedtest
• using the Nighthawk app from my phone

I did the tests over 10 times at different times of the day. 

Please note that the same sites had worked with my older X10 router

[plemans]

When you're plugged directly into the cm1150v, what speeds do you get currently?

[trialcritic]

I got 937 mbps when connected to the modem

[plemans]

What firmware version is on the RAX? 

Did you try a factory reset? After the reset, test the speeds without changing any of the default settings and see what you get. 

[trialcritic]

I did a factory reset of the modem and tested the speed on it. I get only 720 mbps. I see large variations in the speed in the modem when I check multiple times. I guess the issue is with the modem and not the router. 

[trialcritic]

After many checks, I did a chat with Comcast. They told me

Upon checking I see that a noise filter is present for ingress/signal leakage, due to which you're experiencing this issue

Never heard this before. 

They are sending a technician to fix this. It has nothing to do with Netgear.

[trialcritic]

The Comcast technician came and made changes to my system to no avail. I still get the same reduced speed 😞

[plemans]

what website are you testing on? 

Did you try different servers? Some can't max out gigabit speeds

[trialcritic]

I tried 4 speed sites

• speedtest.net (with multiple servers)
• speedtest.xfinity.com
• speedtest.googlefiber.net
• speedof.me

I also tried the tests at different time of day on multiple days to prevent unusual cases.

[plemans]

Have you tried downgrading the firmware a verison, factory resetting and doing a clean install (not from backup).

Test it with its defaults and see how it does