Importing two Excel Worksheets at once through the Data Import Wizard

Hello,

I am working on uploading a large amount of xlsx files into my system using Creatio's Data Import wizard. I am currently uploading them one at a time but I'm wondering if there would be any negative effect to uploading more than one file at a time. 

The wizard is creating Contact records and there isn't any overlap between the different xlsx files so I was wondering if I could run two imports at the same time.