If Customer purchase history look up is taking longer than 3 minutes, you may try this trick to speed up the searching customer purchase history.
1. Click on CUSTOMER button
3. click on "Date Range"
4.
Select "Fixed period:from data to date" for Data filter type
Select 1/1/2016 for FROM DATE
Select 12/31/2017 for TO DATE
Click OK
Next search will use new date range. If you use Date range between 1/1/2016 and 12/31/2017, your search will take about 55 seconds.
Please do this for all Retail pro stations and advise everyone not to use UNDEFINED as a date range.