Audi A4 1.8t stiff 1st and 2nd gear when engine is cold

Hello, 

I've got audi a4 2009 1.8t tfsi 150k mileage 

I've got a problem with a gearbox. 

1st and 2nd gear are difficult to change while changing when engine is cold. Works smoother when the engine warms up. 

I drop it to the garage, and was told that the oil could possibly be too thick.

I have collected car from a mechanic today who drained and replace the gearbox oil to 75W 90 Semi - syntethic. 

Mechanic said there was some metal shavings in the gearbox oil and it could be the first sign of possible "end of the gearbox life" which makes me feel a bit worried... 

After having gearbox oil replaced It didn't really help + now there is a creaking noise while changing the gears.?! 

I've message them to ask but will prob get an answer after the weekend.

Any ideas?