Over the last (almost) two years, I’ve been brewing and experimenting with hazy IPAs with yeast, mash temps, water chemistry, PH, and hop pairing/schedule.
some things I found was that lower mash temps (148F) and lower ph made for juicer beers, but lacked on head retention. As I’m digging into Scott Janish’s book, there’s so many variables to making these beers great. I still made good beers at 5.3-5.4 Ph and higher mash temps (up to 156), but those beers weren’t as juicy. Surprisingly, high or low temp mashes did not change mouthfeel (which I found fascinating).
Of course, your experience can, and will, vary differently than mine. I would recommend you running some experiments yourself and take some notes on what you learn.