VERIFIED SOLUTION i

After using the Combine region function, the tab file slows down MapInfo Pro

Issue

After using the Combine region function in MapInfo Pro, the tab file may slow down your machine. However when the regions are not combined they work fine with no issues.

 

Cause

The cause of this may be the projection of the tab file.

If the projection of the tab file is different to the current map window it may take time for MapInfo Pro to adjust the tab file to other data.

Resolution

UPDATED: December 14, 2018
Please change the projection of the table or map window after performing the Combine region function and then add it again to your map.