I normally run no punch control but I tried 25%
Here are the graphs. Keep in mind that last huge voltage dip was in a chicane not on a straight. My LVC was set to 3.1 V/cell for this test. I also tried firmware 1.29 for this test and aside from maxing out at 138A instead of my usual 110-120 the results were the same as 1.24.
Volts
Amps
And the moment of shutdown including that huge drop in voltage: