Insta360 Studio 2020 on Windows - freezes when changing play rate

Using Windows 10 and the latest version of Insta360 Studio 2020.

Whenever I attempt to change the "Play rate" from the default 1/4 to "Normal", the app stops responding completely and has to be shut down.

I have turned off all hardware acceleration (as that was causing the app to freeze on video export).

I'm currently unable to export video at "normal" speed.