Make sure you have DMA turned on for the disk. My mouse was extremely sluggish during heavy disk operations until I figured this out. Now it's smooth under both USB and PS/2 (I have two mice hooked up to my system).
My guess is USB is more work; the number of events coming into the processor should be the same, but there's more layers of software drivers and request routing to go through for USB.
es I agree with your answer there, because I felt also that USB has MoBo drivers, then OS drivers and then the actual driver for the mouse itself gets installed too, I knida see where you're getting at, but come to think of it maybe the speed of the USB bus compensates for that.
Beer is the devil's piss.
May 11, 2001 9:15:26 PM
Something similar happened to me. It's because I have an ATA100 harddrive and Windows 2000 which automatically thinks the harddrive is ATA66. It'll get all laggy when the harddrive is active. I got that changed and now its working great.