Change the R coefficient. (must be below 7) Change rigid x - y from floor general settings. At least remove the markings in the 2nd basement. It sounds like if you model the curtains around the pool as high beams, it would be better in terms of realism. Otherwise, the empty curtain didn't make much sense to me. It is necessary to solve the system with a semi-rigid diaphragm. You can use live load reduction. In addition to all these, perhaps the biggest criticism that should be made is that there is no horizontal curtain in an 11-storey building. In this case, two beams and two columns have a junction error. (note: these are the points I have seen briefly, I have not made a semi-rigid calculation yet)