HI i have edit my prvious post

an other point to care is at WAN >> General Setup enable and set it to always on then also you can try Physical Type to 100 full dublex or half
ALSO connect the ethernet wire coming from the modem at wan2 which is 10/100/100 base (wan 1 is only 10/100)

i changed from auto and the speed dropped to 15Mbps

Sorry is not working out, at least it did get about 20mb more at its best with current settings

Mine under the settings mentioned is getting the 100mb of my cable connection
I am guessing you have set it under pppoe
IF you can try, give a go & set it at static/dynamic ip if will work instead of pppoe (well my adsl connection it does let me set with pppoe & static or dynamic ip - but not the cable connection)
If you have it under static or dynamic ip then try via pppoe (but note parametres of the isp may need to know them)

Other than that can not think some else right now so come back later if any other member has possible other suggestion
Thanks

looks like i will have to find a replacement router then.

Thanks.

Hi folks.

For what it is worth - I was seeing a very similar issue - I had upgraded from a 2820 (16Mbps ADSL+ line with a 70Mbps cable line) where all was well to a 2920 where I had a 70Mbps fibre line and the cable line.

With the 2920 the cable line was only giving me 7Mbps - I swapped back to the 2820 and it was back to speed again.

After a bit of tinkering, I disabled QoS, disabled WAN3 and set the connectivity on Wan2 to auto negotiate and all was fine again.