Hii. Used iVRy to capture my iphone's motion for that yellow R8 shot. Had to run 5 meters just to get to the middle of the street. Unlike unreal I couldn't really find a viable solution where I can scale the tracking motion so that one step could equal more in-game. Tracking is like 65% there but if you get close to the ground there's a lot of movement/inaccuracies so i wouldn't really recommend using it.