FWIW, yesternight I noticed that at a distance the port showed as a rectangle of sea with a bonfire in the middle of it. When I got closer, there was a .5 second freeze, after which the port looked normal. However, although I could duplicate the rectangularity, the freeze didn't reappear.
231825,15820,-293386,-41.7,-21.3,76.8
buzzsaw
FOV = 58.7
I also had a similar freeze before that occurring when someone spoke on range. Again, that was a one time event and may have been purely coincidental.
I tend to get the freezes at some 15 minutes intervals, one at a time.
DX11.