Google Calendar / Chrome Scrolling Issue in OS X

To combat this issue, you'll need to apply a specific set of fixes. 

1. Adjust the Autoscroll Settings in Your Browser

Open up a new Chrome page. In the address bar, type "chrome://flags" and press Enter. In the new list of items that appears, search for "Smooth Scrolling." Enable it from the drop down menu, and relaunch Chrome to save the changes.

2. Adjust Your Magic Mouse Momentum Settings

In order to tweak these settings, download and install the latest version of MagicPrefs found at  magicprefs.com. This free application will allow you to alter a number of Magic Mouse and Magic Trackpad settings (sensitivity, swiping, drag and pinch, etc). 

A combination of these two fixes should resolve your scrolling issues.