Speeding up retrieval of data when using Web Service

In order to speed up retrieval of data when using a Web Service, our developer recommended that we execute the following SQL script to be run directly on the database.

I would very much like to understand what it does exactly, as regards the overall effect on the system.

I would also like to know what the parameters represent and the possible range of values one could use.  

Most of all, however, I would really like to have some reassurance that it is safe to execute.

We are running Dynamics CRM 2013 On-premise.

Thanks.

Use MSCRM_CONFIG;

update ServerSettingsProperties SET BigIntColumn = 50, IntColumn = 250 where ColumnName = MaxResultsPerCollection';