i put a calcium sulphate, hemihydrate, pump applied liquid floor screed. 40mm depth, in my house, with ufh, it's made by a german company, RTU is the company that supplies it over here in N.Ireland, there's bound to be a supplier over in your area. now i waited two years before i tiled the floors!!!
there was all that noise going about floors lifting at that time, also to see where it would crack, there wasn't too many and i used matting over any cracks , although the main reason was getting motivated to do it
. i used matting over any cracks and nearly 2 years later again, no cracks have appeared, i have 7" of insulation below my floor
used "passive house" standards for the insulation thickness.