Shotcut opens but is "not responding"

[shotcut]

Basically, yes, or your Windows setup is bad. See

Display Method

This setting is only available on Windows and Linux. Shotcut uses OpenGL technology to draw its user interface and display video. OpenGL is typically implemented in the GPU of your computer and its driver in the operating system. These two pieces (Shotcut and the UI library it uses) and the OpenGL implementation need to communicate using a complex protocol. Sometimes, they do not communicate well and have compatibility or interoperability problems. Thus, there are some workarounds: use only s…

You might also not be installing/upgrading/downgrading Shotcut cleanly. Another version will not help unless you happened to install it correctly unlike the other attempts. A sure clean way to install or upgrade is to reboot and then do it before doing anything else.