Whey protein is absorbed too quickly as well and you'd nearly need to drink it every 45 minutes. Obviously adding a fat and carb source will help slow digestion but i personally use blended proteins that have Micellar, Caseinate, Egg,etc. to give me sustained protein synthesis. I've always been told that whole foods are better than powders and for cutting that is exactly the case. You stay full longer and get phytonutrients and fiber from your food sources. MRP's have there place in my diet but not a mainstay.