I've found it a particular issue with the football channels. By changing channel to say, F1 gives the audio, then switch back to the football and the audio returns. Just had to do this for the Palace-Leeds match.
@Beeceegee Re the Malwarebytes problem, you can alter your Malwarebytes settings to screen the folder from scanning for malware. Open the malwarebytes interface, go to Settings/Allow List/Add/Allow File or Folder/Select a folder and then browse and s...