When I used VRay when opening Vray Asset Editor tool you have buttons to start/stop rendering with the ability to run real-time or non-real-time rendering (push and wait to see result). And since I have used it for a long time I am accustomed to that UI, your is quite good, and like I said it is just a matter of spending some time with UI to get accustomed to it. The start/stop buttons are a must, but I just haven't gotten around to it yet. I will make sure that happens soon. It's not as feature-rich as Vray, but I hope the UI makes sense for users new to rendering and users with prior rendering experience like yourself. For me, it doesn't save scene settings when I am done with the rendering and after reopening skp it goes to CPU rendering and pic size of my Sketchup window. Another user (@Mike-Amos) reported the same bug. I can reproduce it and plan to have a fix for the next release. Please, use my picture to promote Rayscaper, this, and any I post later. Thanks! Regards, Thomas