@Fuzz 

 

Seems that the wired connection on the router provides the correct upload speed, just with the Wi-Fi connection.

 

Have you tested other wireless devices such as yoru smart phone? What speeds do you get on that?

 

When connecting to the Wi-Fi, do you see the same issue on the 2.4GHz and the 5GHz network?

Hi Tony, My wired upload speed connecting to the router is 1/4th the speed as when connected directly to the ONT. I have not tested the wireless speeds yet, since I'm having trouble with the wired connection.

@Fuzz 

 

Thank you for the correction, my apologies.

 

Have you tried different LAN ports on the router with the same results?

 

Go to Advanced > System Tools > System Parameters. If you have NAT Boost available, disable that.

 

Do you happen to know the IP address of your computer when it is on network 2, and also when it is on network 3?

I get the same speeds with all 4 LAN ports and I don't have NAT boost available. I can't recreate the switch to "network 3" but I will check the IP when it happens.

I am experiencing the exact same thing.  I bought the C2600 to replace an old trendnet router and my upload speed went to exactly 1/4 of what i should get. I've done all the things recommened here as well.

 

This must be a firmware issue.  Please fix

@RagingAtheist 

 

Sorry to hear, this was a frustrating problem. I ended up buying a new router, since I never found anything that would work.

 

Hope you have better luck than me.