For whatever reason when I try to upload a file to S3 using AWSS3TransferManager it is incredibly slow, both in the iOS simulator and on device (iPhone and iPad). I'm on a 1Gbps fiber connection, so that shouldn't be it, and I'm experiencing the same speeds on LTE.
Starting out at about 200KB/s and then it slows to a crawl at around 10-20KB/s.
Any idea what might be causing this? Anybody else have the same issues with AWSS3TransferManager?