I've been developing a game using UE4 on a 2012 iMac for the past year and I get about 60fps@1080p in the editor on the highest settings. I can comfortably run

I've been developing a game using UE4 on a 2012 iMac for the past year and I get about 60fps@1080p in the editor on the highest settings. I can comfortably run DS+2 Clients to test multiplayer when I scale it down to Low. The only really slow thing is DebugDraw calls, which I haven't found to be a blocking issue, though it it certainly annoying.