S3 download large files (.Net)

Hello! As a workaround, you could try installing the AWS CLI on the same machine and calling the "aws s3 cp" commands from .Net

The .NET SDK is just returning back the Stream from S3. It doesn't buffer the the object into memory. I suspect depending on how you are returning the stream back through your web stack it is attempting to read the entire stream before sending it down to the client.