Perspective table slow problem

This is the first time I use perspective to do a project, I have 20 column, the first column is named ID, I want to hide it, so I add 20 column in the table column and made the first column ID visible false

I also want to make some column editable ,so I change it’s setting in the column
This job can be done just right clicked the table then set in the property, But I found, after I add 20 item in the project the client and the server become very very slow, in vision project.