Poor performance on USA to EU video streams

For Workes & Pages, what is the name of the domain?

What is the issue or error you’re encountering

Video freezes and is pixelated in random session times from USA to EU

What steps have you taken to resolve the issue?

We have not seen any FAQ on potential settings or tweaks. Are there any best practices for the use of the SFU? Without the SFU the performance is good.