There were also some questions about TS -2 and +2 effecting initial AF acquisition speeds. I set the cam on a tripod and picked a good high contrast target. I defocused, then auto focused. I defocused it again and put pieces of tape on the lens so I would defocus the same amount between tests.
As I expected I did not see any difference between TS -2 and +2.
Did you see an increase in how quickly it switched between targets as your TS increased? At least on the 1DX II I can tell the difference in the time it takes to refocus if you move completely off the subject. You are correct it as no effect on initial AF speed at the start of AF. Is that what you mean?