I have the same problem, also on Windows 11. If I am patient after attempting to close Topaz Video, Windows eventually says the app is not responding and offers to kill it.
Which version of the app are you running? The team is investigating some reports of users running into issues when closing the app with the new Topaz Video release.
I noticed the App freezes/crashes after using local Starlight models in different scenarios:
After these steps (variant 1):
Upscale a video with Starlight or Starlight Sharp and wait till it’s done OR cancel the rendering in the export queue with “… > close video”
Click on “File” > “Exit” OR in the menu bar top right “X” – Result: App window freezes/crashes
As well as after these steps (variant 2):
Upscale a video with Starlight or Starlight Sharp and wait till it’s done OR cancel the rendering in the export queue with “… > close video”
Then close the render queue view
Click on “File” > “Exit” OR in the menu bar top right “X” – Result: App window freezes/crashes
As well as after these steps (variant 3):
Upscale a video with Starlight or Starlight Sharp and wait till it’s done OR cancel the rendering in the export queue with “… > close video”
Then close the render queue view
Then click in menu “File” on close all inputs
Then click on File > Exit OR in the menu bar top right “X” – Result: App window freezes/crashes
In all these cases, when the app freezes the user interface is gone, it remains a black app window without any menu bar. The only way to quit the app is to force quitting via task manager (ALT + STRG + DEL) or make a right click in the windows task bar on the app icon and click on “close window” in the context menu (this doesn’t work immediately, only after multiple clicks on “close window”).