Beta 12.0.4 - ultra slow at times

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)

You probably have something on one of your toolbars which is pointing at an unreachable network drive and causing a 30 second delay when the toolbar is updated.

If you use Process Monitor to see what is accessed when the delay happens, it should be able to confirm that or point to another cause.

We can look at the Process Monitor output for you as well, if you link your account.