TIMEOUT when importing 1000+ data records

[booellean]

The company I am working for is using this plugin to import threat data for out clients. There's a nice, easy button to press to do so called Import Threat Data. When I click on it, it gives me the option to import all results in a given time frame.

However, when running this plugin with no limit, it consistently times out. I've tried importing other data with 1000+ ranges, and it also fails with the following code:

There are definitely times where I will need those 1000 plus datasets, in fact, 1000+ is really not that uncommon with the excel spreadsheets I work with. Is there any way to work out this error?