Steff, the longer multiplier will mean a moister curd, presuming you've kept other things constant (e.g., cutting size). Why did you go to a 4x multiplier, from a 3x (sorry if I missed this).
Edit: I'm seeing more, now. I think perhaps you're calling "floc" a bit early? Wayne's got a fantastic video, very beautifully showing a great example of "the floc test." I've forgotten where it is, sorry. It isn't when it starts to slow down, but as Pav discusses above, when it literally is stopped in its tracks, when nudged.