Classic Load Balancer terminates large downloads mid request

Over the past week, clients have reported that any downloads approximately 600+ MB will be terminated mid request within a few seconds of the original request starting. I've checked multiple places to make sure its not my app that's dropping the connection or the EC2 instance and have verified that instances outside the Classic ELB can download the same file just fine.

My production workload is in Opsworks Stacks and I bring up and take down the webservers according to load, and time of day. Opsworks very cleanly adds the instances to the load balancer after they come up and removes the instance from the load balancer before shutting down. I have looked into migrating to NLB or ALB, however since AWS still does not support those load balancers in Opsworks Stacks I am stuck using the Classic Load Balancer.

After pounding my head against the wall I opened a support ticket to report a possible problem. AWS Support confirms the bug is known and "Classic Load Balancer experiences high resource utilization, when large files are being uploaded and downloaded to or from the target EC2 instances". Also I was informed there is no ETA of a fix. This was April 11, I have escalated to my account manager as well, but apparently he has not been able to get any traction either.

I am posting so there is visibility.