So i downloaded the official blender version. a few weeks back but i also downloaded a beta 2.79 from 25th of dec 2017.
I dont know if its settings i’ve altered or just the way each build works… But on the official build if i click GPU render with auto tilesize it uses the GPU only as confirmed by my task manager and GPU utility, and it uses one 200x200ish tile at a time. If i use CPU it uses 16 threads and 32x32 tiles and cpu only.
HOWEVER. If i use the beta version and select GPU render, it renders with like 12 200x200 tiles at simultaneously uses 100% cpu and 100% GPU at the same time and eats through the render about 10 times faster. I was stumped as to why my scene was suddenly rendering snail’s pace with one tile until it struck me i opened the document and it had auto opened with the official blender version not the beta.
am i missing something obvious? does everyone already know about this?