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Full user review
"Makes scrolling stutter/jerky"
Gives you a lot more preferences for scrolling than Apple's standard Mouse preferences.
Makes scrolling less smooth and jerky, especially after first starting a program.
I wanted to try this program after hearing that in the next OS X mouse scrolling will be reversed, but Smart Scroll took my Magic Mouse's very smooth scrolling and makes it jerky and stuttery. Sometimes if I'm at the top and I accidentally scroll the other way (i.e. what used to be the norma way), it jerks at that point too.
I also found the options that are turned on by default to be too much and a lot of work to turn them all off. I would rather start with simple enhancements and add more changes if I want, instead of getting the whole kit and caboodle by default. Maybe since the program has so many options, it should have a single button to let someone start with everything turned off and build from there.
The program does what it's designed to do, and I would give it more than two stars if not for the performance issues. Maybe with other mice it's not as noticeable?