I work with Vue4pro almost every day between 8 to 14 hours. It works fine. I have heavy scenes, work lots and lots with materials and lights and it works fine.
And to make sure it works fine I take a coffee brake now and then and close both application and computer to "let them rest" 10 minutes.
I make sure not to "click hysterically" back and forth. I treat the application gently. And it works fine.

Apperently many of us do not have a lot of problems with Vue4pro.