Before High Sierra upgrade Unreal was running very well, now it’s running so slow it’s almost unusable on I7 MacBook Pro 16GB RAM, SSD. Also fan is on all the time and system super hot.
Other applications also become unusable while UE4 running
Same issue for 4.17.2 & 4.18.
When UE4 has quit fan goes off and system back to normal.
Has anyone else seen this behaviour too, considering going back to previous OSX, but just want to make sure its a real issue?