VBA Slow Process

I don't know why but when I run my macro. After a 2 sheets my macro run SLOW. So SLOW.

Is there a problem in my macro or it is because the formula/calculation

I am running import data macro. [copy data]

AND some of my table have formula on it. *Link/reference table
Example:
table1 - IMPORTING DATA
table2 - IMPORTING DATA
table3 - this table have a formula of =table1[@[.....]]*table2[@[.....]]
......