I had pretty much the same noise and read about the cam chain/tensioner issue on here. The chain is one the other side of the engine to the can belt to the right of the engine as you look at the front of the car.
Had my local (and totally trusted) garage have a look. They took the engine apart, confirmed it was the chain and tensioner, ordered the parts from Vw and did the work.
No noise when done. They also did the cam belt and tensioner as it was nearly due and made sense for peace of mind and labour perspective.
Not saying it is the above but sounds similar.
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