hi i did try to set the MTU but it seems the versie of the kpn modem (V8) cant set MTU
And kpn says we cant help you with it, a other company did try it , but say its all locked in the modem and we cant change it.
So far i did spend 100 euro to fix but if kpn dont help the fix cant be set to the modem
And the networkcard dont have a option for it,
So ty for the time spend on it , lets hope with time it will get better