Comment 20 for bug 144216

I do not see a real performance improvement if I disable effects from appareance panel.
I can see some improvements if I reduce the width of firefox window: in this case the cpu usage during tab switching drops from 70-80% (really high) to a more affordable 40%.

It seems that firefox has to reload the rendered page from system memory to the video card memory. Strange given that the card has 256Mb of ram, I expect it to be cached on the card memory.