CM1000 slow Ethernet , faster WiFi - comcast 1 Gig

[Justin81]

Hi,

I’m a Comcast customer, just bought the 1 Gig Internet, and bought a CM1000 and Google WiFi. I’m getting roughly 160 mbps down via Ethernet and 500 mbps down via WiFi. Comcast is at a complete loss as to why this is the case. I’ve done multiple factory resets . Using Cat 5 cable.

Any theories here would be great. Super frustrated

[BigQuark]

QOS/DPI turned off in your router? 

Drivers updated for your NIC card ? 

[Justin81]

How do I do disable QoS and the NIC fix? Thanks!

[vkdelta]

always verify it directly connected to CM1000 after a fresh power cycle to confirm you are getting close to a gigE performance. 

[Justin81]

I did that - and it didn’t help.

[BigQuark]

The QOS setting will be on a menu inside you router. inside you router.  Where at really depends on the router model. 
To upgrade your NIC Card Driver you'll need to get into windows device manager, find your network adapter  and either Auto update or manually update the driver.   
Hope this helps.  

[vkdelta]

what speeds do you see with your PC directly connected to modem? 

is your PC/Laptop spec high-end and you are not using USB<>ETH adapters?

Please post connection table from the modem. 

[Justin81]

I'm using CAT 5 cable.  I have a Surface Pro 3 PC running W10. My wireless router is a brand new Google WiFi. My wired connection speed is roughly 100-150MBPS today, and my wireless is 500MBPS. I'm paying for 1 Gig. 

When I run ipconfig  here's what it shows for Ethernet.

   IPv4 Address. . . . . . . . . . . : 172.20.35.209
   Subnet Mask . . . . . . . . . . . : 255.255.255.240

[vkdelta]

First thing you want to do is check the wired speeds directly on the modem without any google wifi. if you are getting  500 Mbps in wireless, you should be ATLEAST getting 500 Mbps on wired as well (if not way more). 

Can you please confirm hard wired speeds connecting directly to CM1000? (remember to reboot the CM everytime when you connect PC vs Router behind it)

[Justin81]

I’m getting about 980 mbps directly to the modem. But when I go modem to router to computer via Ethernet my speeds drop dramatically to less than 200.

Maybe there’s a setting with the Google WiFi system I need to adjust?

[vkdelta]

Great. so NTGR modem works as expected  and problem is google Wifi router 🙂

did you turn off QoS in Google WIFI router?