To clarify one point here about “global fftw wisdom files”.
We are in the process of generating a big fftw “wisdom file” for each different unit.
These are files that can be pregenerated that contain information about the fastest way to compute FFTs for a specific task.
(the fftw library is commonly used in convolution)
When in use, these will make the FFT operations a bit faster, compared to not using these files at all (which then would just use best-guesses at runtime).
Having such a file shipped with the system means plugins no longer need to pregenerate them anymore, which is sometimes an issue if a particular developer does not have all 3 different units.
Generating these files takes quite some time though, because we want to support as many different scenarios as possible, covering current and future plugins.
Dwarf was done first, Duo and Duo X files are being generated right now and will be added to the v1.11 final release.