Working now, in the end all that was needed was to enable WAN QoS. This may not work for everyone but it worked for me.Just had to enable WAN QoS, didn't have to touch the profiles. Hopefully this helps someone else.
Support case logged, there's 3 hours I'll never get back..Need to reset the router to default, this is not my router but a customers so I need to do that over the weekend. I'll update this thread as I go.
It's a geting a bit ridiculous now. If there won't be an update released any time soon, then I'll just turf this router and gert another one.Keeping people in limbo like this is not right.
