This update clearly is not ready for primetime. Adobe has a black eye with this one. Get it fixed. This is truly annoying and unnecessary, if they did proper beta testing.
BillBill, there is a 6.2.1 update: http://www.lightroomqueen.com/whats-new-in-lightroom-cc-2015-2-1-and-lightroom-6-2-1/ That "should" fix the crashing. Also you can roll back to 6.1.
Please turn off the GPU from the Preferences and try it.
Go to Preferences
Click on the Performance tab
Uncheck the GPU
Restart the Lightroom
Let us know if it helps.
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