Converting to PDFA3B Format taking tooo long

17Mb.zip (1.8 MB)

I have this Small 17MB txt file which we want to convert to PDFA 3B format,
while doing so Aspose is taking toooooooooooooooo long and its about 8 min for conversion. we have consumer who is escalating the issue due to small file and Long conversion time isssue which is causing us the pain , please check at your end and let us knwo how long it takes to REad the Stream and convert Stream to PDFA3B format ?