My structure keeps on getting EXTREME SOFT STOREY even if i already reduced the storey heights and increased the beam and column sections. Please help me. Thank you.
I think you are using IS: 1893(Part-1)-2002 code. Can you please change the code to IS:1893(Part-1)-2016?
To know how the story stiffness calculated please refer below wiki.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/28477/computation-of-story-stiffness
Also I would recommend using the latest version 22.08.00.175 to check the issue as suggested earlier.
Please attach the model for the investigation.