Data uploads API timeouts

I am trying to upload data which is composed of 76k rows/13 cols via the data API. This is 2.5Mb in an excel file. I am facing “timeout” issues that have prevented this straight forward task.

Is it a case of a limitation of Bubble?

I am reviewing Bubble for a data application which will need to accommodate many millions of rows of data in Production but cannot seem to get past a test review !