What happened to the SAMs?

I tried the German 10.3 Roland early today and found it almost impossible to hit anything flying with Roland 3. I know there’re many changes for SAM after the latest major update, and can anyone tell me how to shoot down a plane or a helicopter with Roland now?

The SAM missile nerfs are to blame for this. but of course there is a way around this. We just need to play smarter.
Try not locking at long ranges and at short ranges, lead your missile before launch. If the aircraft is heading towards you just shoot directly but if its at an angle then take that into consideration.