I’m getting a lot of emails with similar questions.
Does the mouse still lag in Yosemite?
Is SmoothMouse compatible with Yosemite?
Is SmoothMouse dead?
The development had been completely paused for several months. The good news is—today we resumed work on the next major version with lots of new and unique features. Stay tuned.
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By the way, we’re still looking for a C++ programmer who could help write mouse acceleration functions. Interested? Even if in doubt, please don’t hesitate to email me.