# Delay using UDT reference tags **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [October 17, 2023, 8:26pm UTC](https://forum.inductiveautomation.com/t/delay-using-udt-reference-tags/80616 "2023-10-17T20:26:24Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [October 17, 2023, 9:13pm UTC](https://forum.inductiveautomation.com/t/delay-using-udt-reference-tags/80616/2 "2023-10-17T21:13:21Z")
Did you check your Class 3 Communications utilization on the L85's built-in web page? When you say you have two servers, do you mean Kepware and a native Ignition driver are **both** pointing at the same PLC? (That can double the workload on the PLC, making it impossible to share data.) Consider reading this topic and its inner linked topics: > [@Ignition & Logix Best Practice Tips for better communications](https://forum.inductiveautomation.com/t/ignition-logix-best-practice-tips-for-better-communications/60386): > > Hi All, After a whole bunch of issues I have gone down the rabbit hole of what is wrong with our setup on site. I will preface this by saying I a relatively new to all of this… so be gentle stuck_out_tongue Based on much reading(such wow) I believe I have a list of things our site could take away for a better system. Some of them are easy to implement, whilst some of them need… significant work to realize. Especially the AOI approach in point 5 expressionless Before going too far and up… --- _[View the full topic](https://forum.inductiveautomation.com/t/delay-using-udt-reference-tags/80616)._