Convert PDF to PDF/A in C# using Aspose.PDF for .NET - new version is taking long time

We have recently migrated a .NET application from Aspose PDF version 10.1 to PDF version 20.9. We have found a problem converting a PDF document to PDF/A format. In version 10.1 the conversion costs about 10 seconds, while in version 20.9 it spends more than 2 minutes. Is it possible to speed up the conversion somehow in the latest version? I include an example file:
sample.pdf (1.9 MB)

Thanks in advance!

@ralvaradoccasa

Could you please share that in which PDF/A format you are converting the PDF file e.g. PDF/A_1B, PDF/A_1A, etc. We will test the scenario in our environment and address it accordingly.

The format is PDF/A-1B (PdfFormat.PDF_A_1B). Thank you very much!

@ralvaradoccasa

We were able to notice that the API was taking long time during conversion process. Therefore, have logged an issue as PDFNET-49335 in our issue tracking system for the sake of correction. We will look into its details and keep you posted with the status of ticket resolution. Please be patient and spare us some time.

We are sorry for the inconvenience.