how far

hello, my iMac has these specs, how should it perform in UE4 development?

iMac (Retina 5K, 27-inch, 2017)
cpu = 3.4 GHz Intel Core i5
gpu = Radeon Pro 570 4096 MB
memory = 8 GB 2400 MHz DDR4

It should do OK, but you can improve performance if you drop the resolution of your screen, games are typically designed to run at 1080p and your screen is much higher than that so it’s going to greatly reduce performance if you are working at 5K.

thanks, how do I drop my screen to HD?