It may be placebo, but it seems turning POP off has made my V1 feel much more responsive on Ka.
Not only did I pick up every trooper running radar without problem (Ie no pop threats) I have been extremely happy with the range/confidence level of Ka alerts. Previously I was disappointed by the Ka range (K range was, of course, absoluetly insane, as usual) but now it "feels" vastly improved.
Perhaps it is becuase of the increased confidence in Ka alerts. Perhaps it is because my encounters have been better setup. Perhaps it is placebo effect, but I'll be damned if my V1 didnt make me happy today.
So there you have it, POP stays off and I am one happy camper.