I'm wondering if you did a refresh of the OS after the upgrade that the issues would go away. Have it save your documents and programs.I had to revert back to my previous version after upgrading to CU.
I was unable to save anything in Chrome (right click-save as would crash the browser). I was also getting random crashes in other programs if I would go File-Open.
After upgrading to 10 from 8.1 I had all sorts of dumb little problems (and some big ones) but the in place refresh cleared them all up for me.