Why is Yarn build so slow?

Question

Recently, my build process became insanely slow - every container builds for 2-5 minutes. For every container, the slowest process is RUN yarn build. Nobody on the team experienced this (so, I am assuming it is something that affects only my machine), and it paralyzes my work since the project uses over a dozen containers (most of them are TypeScript-coded)

I am using an intel-based Mac. The longest-building container is frontend (React-based), but everything else is also very slow. What could cause it and how to fix it?