It vastly depends on the remote. I'm testing Oxen (on their own hub), it has barely the same speed as dvc on S3. If I was trying to push the results to a direction being pro DVC, I would compare pushing to a local minio, I could claim 10x more speed.
Exactly, this is because of the coupling with DAGShub as remote.
Full disclosure - I'm associated with iterative (DVC creators) - we have nothing to do with DAGShub I'm afraid. They don't consult or collaborate with us at all (to this date) about how to build or optimize their server or workflows for their "hub"