Yes this was the problem exactly. For whatever reason it was sent wrong for the seller even though the had my vin.
I found a car online that came with Sync 3 used that data and it actually got worse!
I then used a forscan asbuilt comparer and it showed that the asbuilt I downloaded was identical to my car. So the one I found for sale must have retrofitted Sync 3 along the line.
I found another car for sale with sync3, got the vin, got the as built compared to mine and saw it was different, used the different settings in my car and problem immediately solved. All is good now.
In the meantime the seller was telling me I needed to attach my GPS to the A Pillar and it was centre speaker causing interference 