great tip ctrl w thanks

I get plenty of crashes whan I have a lot of windows open in the shader room and I start to close them all quickly

 

turning off auto refresh helps a lot for these crashes

 

in the render room I usually render in the same window, that stops you having numerous windows open

 

and I recently discovered the ability to name renders before you render, saves massive amount of time if you are rendering a lot of different passes - depth etc- and saving them externally