Hi Lordfox, also, re:

> I think it will be better if we will have 64bit in Version 4 :)

The 64-bit version will help with problems related to running out of memory when trying to work with heavy models. But slowness is a different problem from that. The main thing you can do currently if your display is getting bogged down is to change the display options to make a coarser display mesh.

To do that, go to Options > View > "Meshing options", and set the "Mesh angle" value to 25 degrees and uncheck "Add details to inflections". That will make for a somewhat rougher and more jaggedy looking shaded display but a much lighter display mesh should boost display speed by quite a bit as well.

- Michael