The program is very slow and heavily LAG after loading the shapefile.

[LEO]

I'm using a map of townships and cities in Taiwan.

When I load the shapefile the program almost doesn't run (but not much CPU and RAM usage), is it because the file is too big? Hope that fixes it. (See video 1 in the link below)

I am very interested in your kit. I also believe that most people need township-level shapefiles. But this is not very friendly if too large shapefiles can cause LAGs.

https://youtu.be/D1CJIcSAd4Q( video 1  )

https://data.gov.tw/dataset/7441(Taiwan township urban boundary shapefile)

[Eswaran Thirugnanasambandam]

We are unable to download the shape file from the provided link to check the reported problem. So, could you please share the shapefile, which would be helpful for us to investigate further and provide you with an appropriate solution at the earliest.

[LEO]

hello: this is the file

The file is UTF-8 encoded

Attachment: TAIWAN_fd91f809.zip

[Eswaran Thirugnanasambandam]

We validated the reported problem using the provided shape file. Since the shape file contains nearly 400 shapes (polygons), each with a large number of points (more than 25K points). As a result, Each polygon shape generation with a large number of points and rendering on the UI would probably take some time with each refresh and layout change on the windows.

This problem will also occurs on normal shape rendering (with a large number of points) without using the SfMaps control.