# Test Machine slow.... Looking for a reason **URL:** \ **Category:** Ignition\ **Tags:** vision\ **Created:** [May 13, 2024, 7:37pm UTC](https://forum.inductiveautomation.com/t/test-machine-slow-looking-for-a-reason/90329 "2024-05-13T19:37:32Z")\ **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:** [May 13, 2024, 7:42pm UTC](https://forum.inductiveautomation.com/t/test-machine-slow-looking-for-a-reason/90329/2 "2024-05-13T19:42:10Z")
Did you drag all of your tags from the PLC into Ignition? If so, you screwed up. Only make tags in Ignition for the tasks you need Ignition to perform. Meanwhile, some reading for you: > [@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… Read all of the linked topics, too. In particular, look at the Msg Class 3 stats in your PLC's diagnostic web page. If you've maxed that out, your problem is too many tags for your PLC, or too many too quickly for your PLC. FWIW, 250ms scan classes are unusual in SCADA applications. --- _[View the full topic](https://forum.inductiveautomation.com/t/test-machine-slow-looking-for-a-reason/90329)._