Hi

I have A3 2.0 TFSI with a idle problem and some error codes for misfire. The car runs perfect for some and at random it start to lose power and idle gets rough (drops to around 400/500).
After some changes and maintenance it got better but it still happens from time to time.(when it happens I hope I will be able to get some video of it and upload it here )

Error codes :
P0264 -Cylinder 2 Injector Circuit Low
P0300 Random Misfire Detected
P0302 -Cylinder 2 misfire detected
P0303 -Cylinder 3 misfire detected


thing done to the car:
change oil
change oil filter
change fuel filter
change air filter
new spark plugs
new ignition coils
new injector cylinder 2
new lambda sensor.
compression test (13 in all cylinders)

I have no idea what to do next can anyone help or give some advice .