When I first got upgraded to infinity 4 about 9 months ago, I was getting speeds in excess of 250Mbps according to speedtest's Android app. Nowadays I am lucky if this goes over ~ 40 Mbps.
I'm in a new build which has FTTP and fibre voice access so it has never had FTTC or ADSL.
I've tried a wired connection but noticed no massive difference.
I am using an ASUS RT-AC55U router - too many bad experiences with the HH6. The slow speeds were occurring with an HH5 though so it doesnt look to be a router issue.
Wondering if there is anything else I can check? Are there any specific values for MTU size or anything that I might need to look at?
I am considering downgrading to infinity 2 at these speeds if I can't improve them.