[Challenge2022] data generation time issue

Hi， Q1: The constraints for the training dataset show "Average bandwidth must be between 10 and 10000". I changed the "max_avg_lbda = 1000" parameter in quickstart notebook to "max_avg_lbda = 10000". The time taken to generate data has increased from about 10 minutes to 4 hours. I wonder if there is any problem. Q2：Whether the submitted model for testing can be the best model generated in the training process. Or must be a model after 20 epochs of training. Could you please advise? Thanks， Mei