ac66u and fibre connection really slow

[olaola]

hi,
just recently i have 1 fibre connection 1000/1000

when i connect my fibre modem directly to my system i have on avg. 700/700 connection
when i connect my fibre modem to my ac66u router i only get 120/4
what is it what i'm doing wrong?

i have setup dual wan, fibre is on lan port 1 (primary) (changed to wan doesnt make a difference)
i'm running 378.53.

Thanks for the help

 

[olaola]

ah solved. qos was set to previous speed

 

[mstombs]

I doubt you need QOS with that connection - and I suspect you need the hardware acceleration bcm_nat CTF to get close to no router performance,