After installing the purchased extension of BSS_M2AdminPreview version 1.0.8. It makes the admin sales order grid to load slowly.
Steps to Reproduce the issue:
1. Click on Sales -> Order Menu from admin. And check the slow loading of sales order grid.
2. After disabling this module, better performance of loading occurs.
Can you support us optimize the speed?
To optimize the loading time after installing the module, please download the attached file below and overwrite the current file on your site.
Before optimizing, the loading collection time is about 10s to 12s. After applying this fix, the loading collection time is just about 6s.