A question about precision

[CCA8290]

I ran your source code (DBSCAN) directly, All hyperparameters follow the paper and Github repository, When using a Tesla V100, the highest accuracy on Duke-Market is mAP: 68.5%. When I use two 2080Ti, the accuracy reaches mAP: 73%. May I ask Why is this? Maybe BN? Maybe triplet loss? The conditions of the laboratory do not allow me to use multiple graphics cards all the time. I look forward to your reply.