@GeoffreyChen777 I have exactly the same problem. Did you solve your problem? If yes, could you please share your solution?
I tried pytorch nightly as suggested by @Mr.Z , but it didn’t solve my problem.
@breakds Somehow yes. In my case it was I/O (data loading) problem. I was reading my training data from HDD on the fly (reading raw audio files, plus data augmentation/pre-processing) which was the very slow. When i put my dataset on SSD, everything was fine.