Got the issue resolved yesterday.
I took it to the dealership for inspection and had to leave it overnight. The tech told me that he could not find any fault codes but said that the symptoms pointed towards fuel pressure issues. He applied a software update (SIB 121713) and now the slow cranks and jitteriness is gone. It also feels a lot more responsive. The best part is that it was covered under warranty
If you put your car in reverse and let it roll on its own do you feel it suddenly accelerating then slowing down randomly or sometimes the rpm fluctuates on idle?
Here is a screenshot of the report: