![If GPU Compute is greyed out in the settings, You are NOT using your GPU. Choose one of these from system settings other than "None". : r/blender If GPU Compute is greyed out in the settings, You are NOT using your GPU. Choose one of these from system settings other than "None". : r/blender](https://preview.redd.it/nti59513j8d61.png?width=617&format=png&auto=webp&s=c169a2f7eb36c21dd7d36dc6c474ada87b8a4d2e)
If GPU Compute is greyed out in the settings, You are NOT using your GPU. Choose one of these from system settings other than "None". : r/blender
![Grey objects in Viewport/Render Cycles unless i enable "High Quality Normals" - Technical Support - Blender Artists Community Grey objects in Viewport/Render Cycles unless i enable "High Quality Normals" - Technical Support - Blender Artists Community](https://blenderartists.org/uploads/default/original/4X/3/6/a/36af3cbd01414f51ab6dbc197e820e8c64c6fc11.jpeg)
Grey objects in Viewport/Render Cycles unless i enable "High Quality Normals" - Technical Support - Blender Artists Community
![GPU rendering causing artifacts, aka darker areas (R9 270x - Blender 2.7a) - Technical Support - Blender Artists Community GPU rendering causing artifacts, aka darker areas (R9 270x - Blender 2.7a) - Technical Support - Blender Artists Community](https://blenderartists.org/uploads/default/original/4X/2/c/c/2ccaf509580d135d31a028e68e1e992bdd453f4c.png)
GPU rendering causing artifacts, aka darker areas (R9 270x - Blender 2.7a) - Technical Support - Blender Artists Community
![blender - Why is my rendering not using CUDA even though I have selected it and saved it in my preferences - Stack Overflow blender - Why is my rendering not using CUDA even though I have selected it and saved it in my preferences - Stack Overflow](https://i.stack.imgur.com/G0Mjd.png)