Excel Slow down as soon as I have a moderately sized sheet

[clemkonan]

I have a sheet listing specifications for about 250 ingredients with headers for ingredient name, Supplier, risk levle , etc plus a few formulas. If I want to insert a new column Excel gives me a warning that the operation is going to take a long time. Why is this happening. If I copt the same sheet into another tab to create a different view the same thing happens.

Why is this happening?

Thanks for your time.

 

[Joe4]

I think we need a bit more information before we hazard a guess as to why this is happening.
We really need to understand your configuration.

How many rows/columns of data do you have?
Do you have a ton of formulas?
Have you extended the formulas out past the end of your data?
What kind of formulas are you using?
Do they reference other worksheets or workbooks?