ID 595020 - Monitor Out playback doesn't work if you disable audio in the preferences

Problem summary
Monitor Out playback doesn't work if you disable audio in the preferences
 
On the Monitor Out display, the image will freeze, and in the Viewer the playback speeds up
 
This affects NDI, AJA and Blackmagic outputs, but not floating window
 
Customer reported version
hiero.14.1v5
 
Customer reported platform
rocky9
 
Steps to reproduce
 
1) Open Nuke Studio / Hiero

2) In Edit>Preferences>Performance>Hardware, set audio device to Disabled, and press OK

3) Close and reopen  Nuke Studio / Hiero to apply the setting
 
4) Import any footage and double click it to load it in the Viewer
 
5) Play the Viewer, is should playback normally
 
6) In Window>Viewer Monitor Out>Cog set the Device to NDI/AJA/Blackmagic and enable monitor out
 
7) Playback the Viewer, the playback will be 60fps, thought the FPS counter shows the default FPS, and the image won't update on the Monitor Out display
 
Expected behaviour
For monitor out to playback an image and the Viewer to play at the correct framerate
 
Actual behaviour
Monitor out image output freezes during playback and the Viewer plays back too fast:
 

 
Workaround
In the ~/.nuke/uistate.ini, set audio/disable to false
 
Reproduced by support
This bug has been reproduced in:
Nuke Studio/Hiero 15.1v5 - Windows 10, Rocky 9.3, macOS Sonoma
Nuke Studio/Hiero 12.0v1 - Windows 10
 
Earliest version tested
Nuke Studio/Hiero 12.0v1 - This issue appears to be in all tested versions of the product