A new useful plugin for 3ds Max has been released – psPrvRender (RenderStacks Preview Render). Using a simple interface, one can now set lower settings of rendering for the preview. But final render settings will not change. RsPrvRender plugin’s interface lets you switch on and off such render settings as motion blur, DOF, render elements and other effects, change the render output resolution and many more in a few clicks. Furthermore, you can change specific settings important for certain renderers, depending on which is being used. For example, sampling options.
Amazingly, RenderStacks Preview Render is completely free for both private and commercial use without any limitations and supports V-Ray rendering, V-Ray GPU, Corona, Arnold, Fstorm, Redshift and other renderers.
You can read more and download rsPrvRender plugin here: https://renderstacks.com/