That's great! Thanks for the quick reply. 

I presume 1.4 in your case means 1.4 seconds to run the query that's causing the hyperevent error? Not always but sometimes I find hyperevent errors in synchronous processes having some sort of infinite loop somewhere in the code.

In the past to determine which part of csp is causing an issue I've used ^%SYS.MONLBL which is mainly used to log the amount of time each line in a routine (mac/int) takes to execute but since csp gets compiled to .cls and .cls gets compiled to .int you can add the .int part of the csp to monitor the csp. 

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...