My Excel file only 10 MB but take very long time to open

"Is your Excel file linked to external data sources, contains excessive formulas, or has too many conditional formatting rules that might be slowing it down?"
"Have you noticed slow performance only while opening the file, or does it also lag while performing calculations and navigating between sheets?
Is your Excel file stored locally or on a network/SharePoint? Sometimes, cloud storage sync can cause delays in opening files.

Hi, you should repair and update the file and try to save in different excel formats. Thank you.