That one? It's the power source for it's strange bullet replication technology. Science fiction! It'll have glowly bits and not just be flat roundness later on.
Is the thing you're trying to replicate a single watertight surface or made of multiple pieces? If it's the latter, you should probably make the model out of multiple pieces
I know nothing of UE, is there a Performance Profiler you can use, to show where the slow down is occurring?... other than that if it's the shaders then replace them with something standard... if it still persists then it's geometry or lighting etc if not add them back in one at a time see how this effects performance.…
Thanks, it worked in the viewer! Is there anyway of getting the skycube thing to display to the same settings as the editor? It doesn't seem to replicate.