IE9 renders pages faster with your Computer’s Graphic Processing Unit ( GPU), If you don’t have high end Graphics Card your computer performance may suffer and with graphics cards also sometimes pages not appear clearly with garbled fonts, by default hardware acceleration for IE 9 is enabled by default here is how to disable hardware acceleration in IE9.
1. Open Internet Explorer, Click Tools>Internet Options> click Advanced tab
2. For Accelerated Graphics option select “use software rendering instead of GPU rendering”, click Apply and OK to save changes.
From now onwards IE9 uses software rendering instead of GPU Rendering.