Same here! In my case, it doesn't crash, but it freezes for some seconds (more than 10, though I don't know how much). It happens also in Illustrator. As you've added many features to the character tool in both programs, I'm sure that starting this tool requires much more power from a computer than before (and connecting it to internet to check the Adobe Fonts). Just to help you a bit, I'm working on Windows 7, with an i5, 16 gb RAM, and two SSD HD.
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