Relume Performance Issues with Large Sitemaps on Windows and Edge

Hello, I'm trying out relume and so far I love the concept and the components and the scaffolding features. However, when I have a sitemap of about 50 pages, the wireframe UI becomes mostly unresponsive. I'm using Windows and Edge as my browser - is this a known limitation? Is there a workaround or should I create different projects/sitemaps for different parts of my website? Still in the free trial, but would love to get this resolved so I can give relume a fair shake.