I’m a N00b and just getting things up and running. Everything’s running fine apart from when I run the above download which seems to be jerky has hell.
Any ideas what I could be doing wrong?
Nothing else running on the system bar UE4 and running the sample as Standalone game.
Most likely your computer doesn’t have a very good GPU. Macbooks these days typically come with an Intel integrated GPU and they aren’t very powerful. With the high resolution display it could also make it slower since it would run at a higher resolution than you’d normally run a game.
Go into Quick Settings -> Engine Scalability Settings and start setting stuff lower until it runs fast enough. As deathviper said it is probably due to the combination of slow GPU + high resolution.