Hi Stephan,

re:
> but will v4 support multi-threading? I have a lot of cores and would greatly benefit from that
> in combination with the 64bit memory usage.

MoI does already support multi-threading in both V3 and V4 - it's currently used in the viewport display engine and also in export to mesh formats when meshes are being generated.

It's not really feasible to just use multi-threading in every single function, it takes special work to make use of multiple CPU cores and so it's something that's added to specific targeted areas. I would like to add it to more areas in the future but it's a pretty difficult area of work so I'm not sure when that will happen. Probably display mesh generation on file loading will be the next area that will get it at some point.

- Michael