I've not noticed excessive noise on startup (I've had oil burners for 25 years, ,my brain tunes outthe tractor sound) but I have noticed a very pronounced shake at tickover which must be some serious imbalance in the engine somewhere.
It was so pronounced yesterday that my wife commented on it as it was visibly shaking her lady bumps!
Might have to get that looked at this week.
(PS mine is a July 2017 Mk7.5 GTD)