When I loaded Ubuntu Mate 15 on my Raspberry Pi, I overclocked it to 1.1GHz (stable), however I noticed that the graphics performance on the Ubuntu Mate distro is very slow. When doing 3D graphics, I may get 1 to 2 frames per second.
I attempted to benchmark the Raspberry Pi 2 (at 1.1GHz) with a game called ‘Red Eclipse’, and the rendering performance was approx. 1 frame every 30 seconds.
Am I missing any important libraries for 3D graphics performance? is OpenGL needed? I thought it was already included. Just a little bewildered.
These Raspberry Pi’s are being benchmarked by me to eventually use in a studio 
We’re planning on creating a cluster for 3D rendering in the near future, I just want to make sure I have all of my ‘ducks in a row’ so-to-speak, so that we can squeeze every last bit of performance out of these great little Pis