Slight Change to Birth Objects Operator

[Raytracer]

They are certainly created in order in the first event but in a list of 14 I'm getting ID12, ID11, ID3, ID9, ID4, ID7, ID2, ID13, ID0, ID6, ID1, ID5, ID8, ID10 when per frame was set to 0.1 and 9, 2, 6, 3, 13, 0, 10, 1, 11, 4, 7, 12, 5, 8 when set to 1.