I recently built redesigned Instagram clone. When I run next build and open it, it runs beautifully fast. But deployed version (on vercel) is really slow. It takes a while to even show the page, and navigation to other links also takes a while. If someone is willing to see what is going on, maybe point out some mistakes I made or give some advice? I'd appreciate any help.

Live site: https://bt-snapgram.vercel.app/
Source code: https://github.com/boristenkes/snapgram