hi @life.tripod
Interesting use case! So, if you’re saying this fails around a certain file threshold it could be related to memory and resources in general, compute power. Are you hosting n8n or using our cloud? If the former you have more control here.
Regardless, this document walks through some suggestions you can use: Memory-related errors | n8n Docs
As for the second question, check out this reply: Iterating through google drive subfolders - #2 by ihortom
Hope this helps!