Good news! Disabling two particle systems that was widely used in many sublevels, unreal 4.12 reached the same framerate from 4.11 (actually 3-4 frames higher) 
I’ll try to investigate further what changed in 4.12 particles.
Good news! Disabling two particle systems that was widely used in many sublevels, unreal 4.12 reached the same framerate from 4.11 (actually 3-4 frames higher)
I’ll try to investigate further what changed in 4.12 particles.