We installed UE4 on the mid-2012 (my son’s newer box). The driving demo still shows the same type of freezes mentioned earlier. The ShooterGame running medium quality settings seems to work. The driving game appears to work worse than it did on my mid-2010. Both of us have the 5770 Video card, he has faster CPUs but fewer cores, he has 16GB to my 22GB. It appears these older Pros will not work well as is.
I am willing to try out a new video card to see if it fixes this. Does anyone know if the HD 7950 Sapphire video card will work the magic it advertises on UE4? It is supposed to be Yosemite ready and boasts up to 300% improvements in frame rates. I’m thinking of buying one of these to test it out. Perhaps this and an SSD will salvage our older systems to effectively develop in UE4. Any guesses as to whether this would do the trick?