slow performance Set-PnPListItem

[pki-vdp]

I'm doing bulk updates of updating items on sharepoint to set the author/editor of files.
This goes very slowly: 50000 items easily takes a day or more to finish.
I've tried doing this with batching, but apparently that doesn't work in a ps1 script (it does work in an interactive session).
Any ideas to speed this up?

[Barbarur]

Are you doing anything for each of the results? Getting just 50k items should take just few minutes.

It seems more of a network issue.

[pki-vdp]

Network issue? For a simple command that does not need any laarge payload?
When I upload files with Add-PnPFile, I can imagine it takes some time, and potentially quite long as there is a transfer of data.
But Set-PnPListItem also takes 1sec or longer to complete (timed using measure-command).
And as for network latency: a ping to sharepoint.com takes just 6ms...