No recurrence nuscenes experiments

[gzgzgz666]

**Dear authors:
I really appreciate your great work, and i'm tring to use it in some of my projects. I train your model on 4 3090 and this model is trained for 187 epochs on nuscenes, but the tracking result is bad, just like this picture, What is the cause？

Thanks for your answer!**

[chenxuluo]

For pytorch <=1.11, the default precision on 3090 is tf32 instead of fp32. Also, seems that the setting is quite different, I'm not sure how it will affect the performance.