CM1000 not connecting at gigabit speeds

[ossy43]

I'm having problems with my gigabit connection, I'm just able to get  350 Mbps instead of 900+

I already reset the modem, did factory reset.

Nothing works.

[vkdelta]

which ISP?

have you confirmed that ISP has pushed correct bootfile/config file? 

[ossy43]

RCN in NYC.
Yep according to them I should be getting gigabit speeds. But the max I get is 500mbps.
Connecting direct the modem to my desktop computer using an ASUS XG-C100C 10G Network Adapter PCI-E x4 Card.

[vkdelta]

What FW are you on? 

this looks could probably be configfile/bootfile or a capacity issue. Have you tried any other RCN supplied modem and recieved close to 800-900 Mbps ? 

[ossy43]

Nope, tried the Arris SB8200 and it was even slower...

[ossy43]

I have 3.xxx firmware...

[vkdelta]

since you have tried 2 different retail modems from 2 different companies, I would err on it being RCN issue (boot file or capacity/signal issues)

[ossy43]

Hardware Version	2.02
Firmware Version	V3.01.04
Cable Modem Serial Number	4L0483WF01169
CM certificate	Installed
CM MAC	cc:40:d0:25:c1:b0

[ossy43]

Event logs

[vkdelta]

do not see anything wrong in status message. 

Only thing remains is the bootfile/config file.