You of course can do some tweakings as well - to make Vue perform maybe a little better. Switch off OpenGL and - more important almost - switch off the automatic scene preview (right click on the scene preview window plus setting in the preferences).

I am on Mac so i can't say too much what the process manager shows on Windows. Here on Mac i see how much virtual memory a process uses and see therefore that Vue often goes over 1 GB, especially when rendering.

One day your ship comes in - but you're at the airport.