hey, I created a scene with two objects as 8k. I downloaded in Bridge. I enabled nanite than I only used 2 mesh and when I open their mesh editor their truangle was only 2000. I duplicated only 150 times and fps was 50-65. So I think when I merged modular pieces and in mesh editor over 1 million tringulate value had deceived me. I duplicated 12 times my building and fps count was 60. Now when I duplicate 150 times a 2000 truangulate mesh FPS was 50-65.