Zwift freezes at launch

A few days ago Zwift started freezing at launch. It just hangs on the blue screen with a “Z” that displays some words of wisdom (i.e. “Rest days are important”, which is ironic). After a while, a message box from Windows pops up saying the application is not responding. All I can do it kill the application.

I’ve reinstalled Zwift and I was able to launch it one time. Then today it started freezing again. I’ve opened a ticket but haven’t heard back from Zwift yet (which is normal since it’s the weekend).

Windows 10, latest version of Zwift, latest drivers from nvidia (1070 maxQ). I’ve been using Zwift for about a year and never had any issue before. Any idea what might be causing this?