Best settings for Asus DSL-68U modem router with Plusnet fibre

[#1]

After poor connection issues with Plusnet hub one decided to spend money on a decent modem router
Currently setup and connection seems stable but there are many setting I’m not sure about are required such as ipv6 etc and many others
Also getting lots of system logs such as

Lots of callbacks suppressed
And
Lots of Added mapping tcp

Does anyone know a perfect page by page setup for this router for best Plusnet connection
Thanks

[#2]

Moderators Note

This topic has been moved from Fibre to My Router

[#3]

IPv6 isn't supported across our broadband network at the moment, so those settings are unlikely to have much of a bearing on things.

The TCP mappings are probably UPnP related i.e. devices on your network opening communication channels with the outside world. 

Not sure about the callback supression, but if it ain't broke...

[#4]

Thanks Bob
The Asus router has so many settings just thought I could make use of more and maybe improve performance
Many thanks