Isn't Flex the newer of the platforms? Is there a reason why it's so slow to deploy? I deployed an app via it that deploys in a couple of minutes anywhere else,

Isn't Flex the newer of the platforms? Is there a reason why it's so slow to deploy? I deployed an app via it that deploys in a couple of minutes anywhere else, including build time, but it took an insane amount of time on GAE, and I never managed to find a good reason why. Normally I'd think I had configured something wrong, except in this case it was insanely simple. A network label that allows all ports both ingress and egress, to any destination/source, definitely applied to the servers, and yet they had constant connection issues with each other. It probably was something I did, but the combination of those issues, surprise egress bills, very laggy UI, and various other little niggles just made it not worth my time for now. I'm keen to avoid vendor lock-in anyway, so GCP and AWS don't have that many extra features over smaller providers for me.