Recently we are running FreeSWITCH with Verto Communicator under AMD Ryzen VPS provider called VirMach.
The CPU, RAM and Load Average showed low consumtion right now (Tested with 2 participants). This is compared with Vultr, Linode and/or AWS
I would need someone of you to test this conference
https://conference.disruptive-telecom.com/
Anyway we will keep testing by adding more participants to it and show some results.