I used Crostini without issues on an Acer Chromebook 13 while traveling for a week or so. The performance was as good as you would expect for a laptop in that category. I didn't find it noticeably worse than when I used Crouton (which isn't behind a virtualization layer).
Crostini also works just fine with 2GB on a Samsung Chromebook 3 (a.k.a.'Celes' which is available for $100 on a Black Friday special[1] - the 4GB version is $30 more). It's does swap to disk if you too many Chrome tabs open, but it runs ssh, vim and VS Code like a champ. I have not attempted to run the Android build-chain.
