Processing time for stamps export

What is the expected processing time for stamps export?
I’m using the snap2stamps workflow on a full subswath of S1 data, coregistration/ifg formation completed on average just under 30 minutes but the export step is taking 3-4 hours per scene. I’m processing 98 scenes and it’s about 60% done after running for the last 10 days so it should be done sometime next week.
I was under the impression the most time consuming step was in the co-registration so I just want to check with how long the stamps export is supposed to take and what other people have seen.

It doesn’t seem to be too cpu or memory intensive so i’m assuming the bottleneck is in the disk read/write. I’m exporting it to an external hardrive (Backup Plus Portable Drive 4TB Blue) with usb 3.0.

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COMPUTING RESOURCES TO EMPLOY

CPU=8
CACHE=19G
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