I wrote my own version of this using C++ and some vector math using built-in functions. All I have to say is there will be lag no matter what as an artifact of unreal’s rendering target system. I’ve set my tick groups and yet there is still a slight discrepancy when the camera moves very quickly - I’m using the defaultPawn class, which can move around faster. I can say, however, that C++ creates a much, much lower frame lag than the blueprint system.