You're constantly pushing to ECR so much that it saturates a 40Mbps+ upload consistently 24/7? I fear for your bills, god speed.
That part doesn’t seem to come anywhere from the previous conversation?
But when it matters, it matters — there's a huge productivity difference between waiting 5 minutes and 30 minutes when making staging deploys to iterate on bugs (and sometimes I'll do this 5-10 times in a day).