ArcGIS Pro Loading shapefile is too slow compared to ArcMap programmatically

[MarlonJoseBaldo]

why arcgis pro too slow compared to arcmap when loading layers from shapefiles programmatically?

what are the possible reasons?

thank you in advance for your help.

Marlon Baldo

[DanielFox1]

Hi @MarlonJoseBaldo 

Pro is designed to check the data, looking and scanning through metadata, indexes, building attribute indexes (if needed) and reading projection information whereas skipped or simplified some of these steps. 

I have included some documentation below which you may find helpful 

Problem: Slow Performance When Editing Shapefiles in ArcGIS Pro

Settings that affect data access performance—ArcGIS Pro | Documentation

ArcGIS Pro Performance Tuning: Speed Up Your Workflows by 50% - Geospatial Training Services

I would recommend you move your data from shapefiles into a file geodatabase as a feature class. Then create a spatial index, simplify symbology where possible and make sure the data has been projected correctly. 

[MarlonJoseBaldo]

thank you for your response. i was able to improve the loading of 264 shapefiles with layer styles. the problem is when arcgis pro renders the map. it took a long time finish the map rendering.

[MarlonJoseBaldo]

thank you for your response. i was able to improve the loading of 264 shapefiles with layer styles. the problem is when arcgis pro renders the map. it took a long time finish the map rendering.