god zilla wrote:
think of it this way.. your problem is not about using a peripheral like a mouse or keyboard or track ball etc.. it is about the graphics.
The issue with Macs is: there are no AMD drivers available direct from them. You have to use what's built into OS X. So while it may be a graphics issue, there's nothing the OP can do about it driver-wise.
In this case, I'll bet it's the plug-ins that the OP mentioned. Once the OP verifies that, they can go from there.