I wish I had known sooner that all of @Ubiquiti’s UDM line doesn’t have hardware acceleration on PPPoE and barely achieve 1Gbps over those links on the older SoCs.
I finally was able to compile and build a real iOS app from Linux, using @bazelbuild and distributed Linux workers.
I used @Dimillian's IceCube app, got Codex to modularize it to allow parallel Swift compile actions, and let it loose on 100s of cheap remote Linux workers!