Reports CSV export

Why is there no CSV option for exporting reports? (v2020) this is very important to have specially if we have large number of records.

phpspreadsheet can not export large number to excel in a moderate time.

is there a workaround this?

I believe reports cannot be exported as CSV because there are grouping fields so the data cannot be converted to simple table like data (one line per table record).

If your report does not have grouping fields, you may export from the table or view.