recommendations for input mesh

[otaolafranc]

Hello,
I would like to use my own tet meshes created in salome for algoHex, from my small experience, the best for this kind of meshers (where it uses as input a mesh itself) was use homogeneous size meshes. I have read a little bit about the hex-me-if-you-can workflow, but would like to get some feedback from experiecied user/developper in 'what to feed' to algoHex. for example I have runned a test with a T pipe with hologeneous size tetra mesh (generated using NETGEN) and algoHex is struggling a lot (it has been more than one and a half hour that it has been running without an output).
the mesh looks like this (it is in vtk format and it has all its features tagged correctly):

here is the mesh if necessary:
g.tar.gz
i would love to get some feed back, such as it is better to have even finer mesh or would be better for a best resolution on the edges and the remaining volumetric mesh it is not important that the size is larger....if you use finer mesh it will be more robust but it will take longer or the contrary, etc. this kind of things....
thanks in advance!