That could be a very good point - I give my boil a burst at 100% power to induce a good hot break, back it off to a slow rolling boil for the main boil period, then make my final hop, Brewtan B and then whirlfloc additions with 10-15 minutes to go, then I give it another full blast for the last three to five minutes after putting in the immersion chiller. I have had good luck and clear beer since undertaking this process over the last few years.
Why? I have no idea, since the "thermal stress" probably happens in either the initial or late full-powered boil and that was the reason for a slow roll in the first place.