# \[Bug-15194\]In the tag group editor what does 'custom -\> opcRate do? **URL:** \ **Category:** Ignition\ **Created:** [October 11, 2019, 3:42pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031 "2019-10-11T15:42:14Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![tbraun](https://avatars.discourse-cdn.com/v4/letter/t/ea5d25/32.png) [@tbraun](https://forum.inductiveautomation.com/u/tbraun)\ **Post date:** [October 11, 2019, 3:42pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/1 "2019-10-11T15:42:14Z")
in the tag group editor what does 'custom -\> opcRate do? I could not find anything in the manual that describes this. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [October 11, 2019, 3:49pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/2 "2019-10-11T15:49:43Z")
What version are you using and where do you see this setting? I only see this: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/d95eb530bc9a583907fb4d30db2f5962cbeee7f6.jpeg) ---
**Author:** ![tbraun](https://avatars.discourse-cdn.com/v4/letter/t/ea5d25/32.png) [@tbraun](https://forum.inductiveautomation.com/u/tbraun)\ **Post date:** [October 11, 2019, 3:51pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/3 "2019-10-11T15:51:56Z")
I used to have 7.9 and upgraded to 8. ![del_tagGroup](https://us1.discourse-cdn.com/inductiveautomation/original/2X/2/22d011c0ef95aefd44e4c4042617b90624c02fa6.jpeg) ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [October 11, 2019, 4:00pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/4 "2019-10-11T16:00:25Z")
Thanks, I’ll look into this… ---
**Author:** ![ggross](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ggross/32/12668_2.png) [@ggross](https://forum.inductiveautomation.com/u/ggross)\ **Post date:** [October 11, 2019, 8:29pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/5 "2019-10-11T20:29:44Z")
This is an issue on upgrade. It looks like the old property name from 7.x is getting migrated as a custom property as well as copied to the new `rate` property. We have created a ticket to get this resolved. Thanks for reporting this. Garth ---
**Author:** ![joe.miller](https://avatars.discourse-cdn.com/v4/letter/j/b4bc9f/32.png) [@joe.miller](https://forum.inductiveautomation.com/u/joe.miller)\ **Post date:** [June 21, 2021, 6:43pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/6 "2021-06-21T18:43:42Z")
what effect does this have on our systems; the custom property? I just noticed this property after reviewing some funny behavior in a tag we are collecting history. I don’t think this is causing the issue I am investigating, but I would like to know what it effects (if anything). For instance, I am looking at a tag group we use for history. it is driven with a rate of 60,000 and driven rate of 1,000. Then I see the custom opcRate at 60,000. Thanks-Joe ---
**Author:** ![Damion](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/damion/32/16872_2.png) [@Damion](https://forum.inductiveautomation.com/u/Damion)\ **Post date:** [July 21, 2021, 2:32pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/7 "2021-07-21T14:32:22Z")
I recently updated from 7.9.16 to 8.1.7 and noticed the custom property “opcRate”. After the update our system was experiencing a large amount of lag. After removing the custom property and restarting the tag groups our performance improved. I cannot say for certain that removing the custom property helped or the restart of the tag group but we were not able to run the system until these actions were taken. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 21, 2021, 2:40pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/8 "2021-07-21T14:40:28Z")
It’s the sampling interval used for items added to OPC UA subscriptions. It’s supposed to just be equal to the Tag Group’s rate. I’m not sure why you saw this as a custom property after upgrading. ---
**Author:** ![hunterdg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/hunterdg/32/67774_2.png) [@hunterdg](https://forum.inductiveautomation.com/u/hunterdg)\ **Post date:** [May 10, 2023, 3:13pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/9 "2023-05-10T15:13:07Z")
still seeing this in 7.9.16 \> 8.1.25 upgrade FYI ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [May 10, 2023, 3:18pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/10 "2023-05-10T15:18:45Z")
Yeah, looks like this is a low priority ticket that's just never been picked up. ---
**Author:** ![hunterdg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/hunterdg/32/67774_2.png) [@hunterdg](https://forum.inductiveautomation.com/u/hunterdg)\ **Post date:** [May 10, 2023, 3:29pm UTC](https://forum.inductiveautomation.com/t/bug-15194-in-the-tag-group-editor-what-does-custom-opcrate-do/29031/11 "2023-05-10T15:29:50Z")
seeing @Damion's comment above makes me wonder if this issue is related to (resolved) ticket [66478](https://support.inductiveautomation.com/hc/en-us/requests/66478) 🤔 no need to bother, but might be interesting