How to test vary ttc event for a single model

[www7890]

Hi,
Thanks for this wonderful works, it brings a lot of idea for my own research.
I wonder how to test vary ttc prediction behavior after I trained a model.
I just set
"min_track_size" to be observation_time + ttc in test_script.py
However, no matter how I set this value, the output of accuracy is still high (above 0.85 up)
How is this possible when it has such accuracy for about 10 sec event prediction?
Sincerely