For everyone watching I found the issue!
We where indeed running out of memory allocated to script. I found an unused string being populated with json encoded string that was additive to the string size inside the UI table iteration.
Needless to say it goes to show how finicky interrupted languages without strong typing can be and goes to show why testing with large datasets is important.
Thanks @Peter_Litchfield for bringing to our attention and being gracious in helping resolve the issue.
This can be marked resolved.