As for the memory leak, as experienced for instance in older versions of Esprit 5, or in the early betas of Infinite 5, it is gone (as far as my installation is concerned) or very much reduced (according to the less positive reports), but in any way, it should not be a problem anymore. I read of tests made recently, and to make Vue Infinite crash now you need to employ a simply ridiculous number of objects and polygons - a number that, by the way, would make crash almost any other 3D software of today.