Beta 12.0.4 - excellent new features but it is exceptionally slow at times. :
45 seconds from double click on desktop to opening first lister.
35 seconds where Opus hangs whilst applying a label to a file
The delays also occur after closing the preferences dialogue if something has been changed in relation to file lables. Wonder if they are all related? (Almost new PC, Pentium I7 4790, 16GB memory, Win 10 home. Perfect performance on Opus 11)