|I just tried the scroll button on this post using both Firefox and IE.|
I am set to only 1 step but this is quite crisp in IE. In FF it was a smoother movement, almost masking the steps. [One step is OK for me because the mouse has an acceleration facility if you scroll fast].
It seems to me that there are browser differences coming in to play here, which confuse the issue.
I recall having to try different mouse software versions to get the scrolling to my liking on this computer. Is it the same with another mouse?
Always pop back and let us know the outcome - thanks