Comment by gz5

The other option from this great list https://github.com/anderspitman/awesome-tunneling which seems to meet both sets of goals is NetFoundry.

1. End-to-end encryption.

2. Performance and reliability. 100+ PoPs in all major clouds running their data plane routers if they host (still E2EE), or run routers anywhere if you self-host. Dynamic routing to find best paths across the routers.