What are the ideal PC requirements for UE4?

In addition I’m using 16gb and am having real difficulties, ram usage shoots up to 83% and you really feel it, it can take a minute to add a trigger in a bp, so perhaps 32 gb might be a minimum?

btw I’m running an i7k 4.2ghz, gtx 1080, 16gb ram (3000 MHz) and am still unimpressed