That's an I Beam, Cousin. :) And I was just thinking about posting something similar. My mouse pointer seems to stay intact, but everything else freezes for a bit. I haven't timed it, but I hit Ctrl/Alt/Delete for Task Manager and it eventually shows up and I can close things down until things unfreeze.
At first I thought it was Outlook that was misbehaving, but as things go on, other apps seem to misbehave too, so I'm now wondering if it may be Build 14279.
But here's the kicker . . . normally if something's not right, it'll be the update that's got problems and a clean install seems to make things work all better. Well, not for me this time . . . Things seemed to be working fine with the update, but they're not so fine with the clean install.
Oh, yeah, let's ad one more anomaly to the mix. Firefox has a new update and so does Office 365 2016, not to mention that 14279 is also a new build!