I was using it for my project because the workflows required access to VPC resources (the database, etc). It worked... ok. There would be times when the runner didn't start, or parallel runs would not work, felt a bit random. Possibly was my config, there were quite a few knobs and dials.

Eventually I stumbled on the idea of running the VPC-requiring commands from an AWS CodeBuild script, and invoking it from a workflow executed on a GitHub-owned runner. Works beautifully and I was able to remove a ton of complexity from my infra that this Terraform module adds.