Trying out various features of GitHub Codespaces - tonight I am testing out the performance of extensions. Seems like all of the extensions are available already. Tried out the Terraform, Scala and Dockerfile extensions.
Very snappy - no lag whatsoever. Tried a bioinformatics file viewer (for VCF files), loaded as quickly as when I used the desktop version of VSCode.
Good Job Microsoft. I will keep posting here as I continue to work through this beta release.