What Are the Difficulties with Next.js Development Services?

I've recently started working with Next.js, and while it's a powerful framework, I’m curious about the challenges others have faced when using it for development. Specifically, how does it handle scalability when projects grow in size? Are there any significant issues with SSR (Server-Side Rendering) or SSG (Static Site Generation)? I’d love to hear your thoughts on whether it's easy to optimize performance and handle various complex features that require fine-tuning. What difficulties should a developer be prepared for?