Bad performance updating or deleting a node

I want to update a node in Tamino, and sometimes it takes very long, while other times it’s really fast.
I’ve tried setting a high page size (10000) of the Tamino-session, and it happens the same.
Could somebody give me a tip.
Thanks a lot,

Sergio Torres

How are you deleting the nodes?
Could you post some of your code please?
I don’t undrestand the relevance of the pagesize?