Astro is great. (Just moved my portfolio over.) But please don't blame the tool if you don't get good scores on your Webflow website.
This is the mobile score of one of my Webflow builds. 🫡
LCP at 1.9s and CLS at 0 on a mobile Webflow build proves the point better than any argument. What gave you the biggest speed win, image sizes or trimming scripts?