I am having similar issues although it 'jumps' to a cell in the same workbook.
I believe there was an Auto-update in mid December and there were a few things Microsoft screwed the pooch on. That update deleted all the ActiveX controls out of my workbooks. I don't have a lot of these types but what I do have are important. It turned
out to be an easy fix but it's pretty clear MS let some grade school kids write some code for their programs.
I'm not sure what this 'freeze and jump' thing is yet but I can tell you I am looking at other vendors operating systems and spreadsheet software for the first time since I bought my 1st computer in 1990.
On an unrelated (maybe) subject but worth noting - if you use Office 365, check your Network Resources and see how many connections you have to outside IP addresses for Excel. I found Excel ported to an IP address in Prague this morning. That was the final
straw for 365.
They are not 'always on' but they are persistent and a resource hog. Office 365 is coming off my machine.
I'm interested in the outcome of the links to servers in eastern europe. MS need to let us know what is happening and why.
Regards
Gordon