When you make an event lab circuit track and you test drive it, the game makes you do every lap that you set it to which makes it annoying for people making 50 lap custom tracks. This might be only for Xbox one because I never heard about the issue before, but please fix
Just set the race to 1 lap before test driving. Pretty sure that is possible anyway.
As Andrew has said, all you have to do is set it to 1 lap, once the test drive is over you can set it back to 50.
Ok thank you