The problem with Vue crashing is really annoying but to my experience, there are only two reasons for crashes and they are both easy to avoid:

(1) 99% of all crashes result from working too quickly in Vue. Vue is a little like an old grandma: Rush her and she will fall. If you try to continue working on your scene while Vue is still recalculation your latest changes (new objects, new materials, eco-systems etc.), the program will lock up. Give it a little time, and it will be perfectly stable.

(2) Very rarely, you will import an object that is too complicated for Vues preview renderer. Disable OpenGL, and it will not crash any more (easiest way to do it: click "yes" when the program ask you whether you want to restart in Compatibility mode after a crash). Problem is that you will get your objects represented in simple boxes in compatibility mode which makes positioning and working with it almost impossible. Reducing the number of polygons will help greatly.

I do admit that treating a program like some feeble patient is quite annoying and I do not understand why programmers seem to be unable to solve the problem. This is definitely a drawback on the program. Yet, Vue has so many strengths that I still prefer it over most other 3d programs. And once you realize what causes your crashes and how to avoid them, it's amazingly stable!