Calculation speed during text import

Hi, I’m using calc to parse each line of multiple lines of text datas to numeric datas for analysis of some processes. Sometimes the log file I created from that process exceeds tens of thousands of lines. When I copy this text file and paste into one column of a sheet it takes more than a minute to fill and make calculations. When I disable AutoCalculate then text is inserted in the column in seconds, then with manual calculation button F9 calculation ends in less than one tenth of the time.
I think AutoCalculation works for each cell filled during import causing this long delay. Is there a way to stop autocalculation until import is complete ?
Thanks

seems you answered your question …