I think you’re doing a batch process for your iteration process? But this amount of objects could be too much for Mendix.
I think what you can do is to try to run the process in multiple steps by reducing the amount of handled objects.
What you also could do is to use the Process Queue Module and then run a batch process to create a amount of queued actions and retrieve in your queued action the related objects. So finally you will reduce the amount of objects handled in a single, independent transaction.
Good luck!
Hi Willem,
I know this module is good performing large import, maybe you find a hint here…
https://appstore.home.mendix.com/link/app/432/
Cheers, Andries