Sometimes scene happens to be quite light and I get 3x the framerate I need. It'd be nice to be able to cut down rendering power, so gpu don't heat so much without need.
Usually I use pause button all the time because of that turbine inside my computer when I need no actual rendering. For instance when setting parameters that i know will do fine.
Looking for that button all the time is distracting.
Maybe there is a hot key? It'd be cool to do it with Caps Lock like in After Effects, so you get visual feedback from keyboard. Or Scroll Lock - who uses that button anyway
