Woocommerce Standard Export malfunction

General Import and Export malfunctions WooCommerce 3.1.2 (latest version and before)

1. Using the product Exportfunction (Standard NO Plugin) the system needs unbelievable annoying time to create the simple text.csv on the server in the file wp-content/uploads.
Even if the selection of the columns is small the export needs hours (we have nearly 30000 products at the ssd Server).
2. is this work done (the admin sleeps already nicely) automaticly the download begins, sorry should begin, mostly not, network error what I understand after so many hours.
3. But whats about the file at the server, which I can acces by FTP whithout problems ?
OOH its gone !! Deleted !! Congratulations for this great idea and wise solution.

How to solve ?

OK do it again, again and again and perhaps good luck it will function some day, some week ….

If anybody outside has a good idea for this topic to help the programmers please give them good help and consult, because I dont know about the used complicated algorithm to export (also import) so long time working.
Woocommerce is a really nice solution but without a fast and stable working Import and Export feature it stay unprofessional.
In our old system I imported and exported without FTP help directly 30000 products in less then 1 hour (cloud solution).
In woocommerce its a good luck job, last time 2 days with good luck.

Please let me know about help, because its really horrible to make administration of the so many products piece by piece.

Thanks

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