I just upgraded from Precise Pangolin to Quantal Quetzal.
I have a Nvidia Quadro FX 3450 and a Intel Quad Core Q9450 2.66 Ghz , 8 GB RAM , 64 bit CPU
In precise I had to use Unity 2D to have snappy performance.
Now in Quantal the windowing seems around 30% slower ( did not measure , arbitrarily based on feel) . Google chrome seems choppy and at times does not respond to mouse clicks.
Is it possible to enable Unity 2D in Quantal . Alternatively will a GPU upgrade be needed.
I do a lot of opengl molecular visualization and was used to turning off compiz/Unity 3D to have my GPU devoted to the visualization application rather than windowing. If I cannot turn on 2D , I am assuming a new GPU will fix the slowness issue.