A further question if I may.
Steinberg support have discovered the solution to 2.10 hanging my machine.
it appears my User Library / Preferences folder contained two slightly different formatted plist files used by dspMixFx.
These plist files appear to be created on running dspMixFx for the first time.
So at some point the various versions of the dspMixFx app changed the naming format of the file so a later update did not overwrite or delete the previous file.
Im guessing therefore that your installation is a recent install of dspMixFx which hasn’t yet needed an update?
Did you ever user earlier versions of dspMixFx ie v1.2.1 or v2…00?
Cheers
David