Hello My Suggestions --As you said, the same situation occurs after you make an account, --If you delete the 4th floor without a pattern plan, the situation improves, --1. remove the rigidity of the floor, there is no curtain --Remove short objects on the walls, --If there is no architectural problem, hang the beams on the outer wall, --Make the K08 beam 60 cm, --Remove the errors in beam, column(B), geometry control Ünver ÖZCAN