Hello there; The problem will be solved if you select the "Single loading state calculation method" option from the analysis settings and set the "targeted mode number" to 100 from the modal analysis options in the structure tree. Since the curtains are independent of each other in the building, many modes came out with low mass participation. As I understand it, since it is a small project and there is no option to add new elements, the number of mods should be increased. Best regards...
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