Performance impact of out-of-process for AKS-hosted function apps

[deyanp]

What is the performance impact of the new out-of-process/GRPC based approach for function aps hosted in AKS? I assume the performance will be inferior to the in-proc .net core 3.1 azure functions runtime, or?

[AartBluestoke]

how will the overhead of the underlying azure function host vs your app be billed? (when you're paying per second, per MB), starting up functions, then starting a second out-of process host.