I updated how I generate my OG images to a single page (https://github.com/chriskirknielsen/dotcom-2024/blob/main/src/content/og.vto), thanks to @zachleat's single-page idea (https://www.zachleat.com/web/open-graph-easy-build/). I end up with 121 fewer files, nice. And the build times?

Before: 1x OG page per page
➡️ Local cold start (3x avg): 4.613s average
➡️ Netlify build: 31s

After: 1x OG page for all pages
➡️ Local cold start (3x avg): 4.637s average
➡️ Netlify build: 31s

~~Eleventy~~ BuildAwesome is just too freakin' fast to make any difference. 💀