Any settings to improve JSONwriter performance

[markopavic]

Hello everybody,
I have dynamic CSV files with nested objects that I am converting to JSON.
Using ChoJSONWriter, with a CSV file of 7700 rows, 800 columns, 27MB total size, it takes around 3minutes to convert to JSON. Is there a way to improve performance?
Thank you

[Cinchoo]

sample csv with expected json output along with code helps to guide. use dotnetfiddle.

[markopavic]

Hello,
Thanks for reply.
I'am attaching a sample CSV file and JSON generated from my sample .NET code: https://dotnetfiddle.net/uAQHk9
I need to proces dynamic CSV files with many thousands of rows and up to a thousand columns.
Also, the file may contain many nested objects/repeated fields (with unique names).
I need to integrate this processing in a web application using .NET CORE 6 as a backend and React as Frontend.

Thanks in advance for support.

Result json demo.json
sample_file_1_row.csv