Why does converting large Spreadsheet data to vCard affect performance, and how to fix it?

I am trying to convert a large spreadsheet of contacts into vCard format, but the process becomes very slow and sometimes even crashes. I suspect the file size and data complexity are affecting performance. Has anyone faced similar issues while handling bulk conversions? What are the best practices or tools to improve speed and ensure smooth conversion without data loss?

Converting large Spreadsheet data to vCard can affect performance because big XLSX files put extra load on the system and slow down the process. You can face slow speed and slight lag, as a large number of contacts take more time to convert properly. Sometimes, a few details can not convert correctly if the data is not well managed. You can simplify the procedure by using an advanced Excel to vCard converter, such as OSTtoPSTAPP, which can easily convert Excel contacts to VCF and function as an XLSX to VCF Converter, providing reliable and accurate results without difficulty. It provides many advanced features like preview option, filter data, bulk migration, and more, for accurate results. Also, it allows you to convert a few XLS files to import VCF files for testing its features.