Common issues
Meshing
Mesh had a large number of elements. Small gaps + small faces etc. In this case had to increase the size of corners, change coil height (from 201.9 to 202 - the same distance between gaps) a bit such that no small faces are forming anywhere.


As result 15x less mesh elements that should result >100x speedup. In 3D details matter

Foil / stranded windings sharing face
Foils without a gap between them do not work (due to alpha/beta fields), while stranded can produce wrong results.
This needs a solution from Elmer’s side.
DEV-238 [UNAVAILABLE -- was: https://trafolo.atlassian.net/browse/DEV-238?src=confmacro]