I'm not sure if this is related to webflow.com, but chrome will lock up for around 3-4 seconds when webflow dashboard is on an opened tab and then webflow.com is accessed directly on another tab (like the forums).
So I'm curious what this could be. I'm on a relatively clean install of W10, with a 500 gb samsung SSD and i7 with 8 gigs ram. It doesn't appear to be locking up on any other site, as I've been watching carefully. The conditions to cause the lock appear to be dashboard opened in a tab for sometime, along with an additional webflow tab.
I've done a clean install, and have removed all plugins.