# OPC Tags - Subscribed vs Polling **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [September 6, 2024, 1:02pm UTC](https://forum.inductiveautomation.com/t/opc-tags-subscribed-vs-polling/95630 "2024-09-06T13:02:32Z")\ **Posts on this page:** 1\ **Showing post:** 3
**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:** [September 6, 2024, 1:25pm UTC](https://forum.inductiveautomation.com/t/opc-tags-subscribed-vs-polling/95630/3 "2024-09-06T13:25:51Z")
> [@Andrew\_Benzing](#): > > to save resources. This hints at current problems with performance. Have you looked around here for related topics? Especially this one: > [@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 a… (There are many other topics linked there, and cross-referenced linking there, that are worth studying.) Much depends on how tags are organized (or not) in your PLC. Some speed gains cannot be made without PLC changes. --- _[View the full topic](https://forum.inductiveautomation.com/t/opc-tags-subscribed-vs-polling/95630)._