Hi @<1806135344731525120:profile|GrumpyDog7> , this might be related to the boto3 settings, since ClearML uses boto3 under the hood to downloads from S3. You can find the default settings here , where you can also change them using the clearml.conf configuration file (or any of the AWS boto3 env vars which boto3 can automatically detect). Also supported in this section are connect_timeout (default 60), read_timeout (default 60), stream_connections (default 128) and signature_version