UE4 Future Features

I am running the UE4 on my new MacBook Pro 15’ Retina with 2.3Ghz Inter Core i7, NVIDIA GeForce GT 750M 2048 MB, 16 GB 1600 MHz DDR3 which is the late 2013 release. But it is kinda laggy do you guys think it is due to the Processor? and I wonder if UE team is going to lower the requirements to smoothly run the engine?
Thanks.