@alex.veuthey So I removed shuffling from my datasets but that didn’t really improve the speed (0.96 min/epoch compared with 1min/epoch), but significantly reduce accuracy of my model.
If I decide to do the preprocessing offline (let’s say normalizing, random flipping, coverting to pytorch tensors, etc), and then save them - which format should I use? I can’t use .png/.jpg anymore for tensor data, should I use .h5? Thanks again!