What broader build performance optimizations, beyond just switching bundlers, can help speed up a large Next.js project's build times?

You can reduce the amount of code that needs to be processed by removing unused dependencies, split very large pages into smaller more focused components, use incremental static regeneration instead of building every page eagerly at build time, and take advantage of build caching provided by your deployment platform.

// Avoid pre-building every single page eagerly
// Use ISR to generate less critical pages on demand instead
export const dynamicParams = true;