# Tags slow performance

**URL:** <https://forum.inductiveautomation.com/t/tags-slow-performance/44530>\
**Category:** Ignition\
**Created:** [March 16, 2021, 3:45pm UTC](https://forum.inductiveautomation.com/t/tags-slow-performance/44530 "2021-03-16T15:45:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![JORGE.REYES](https://avatars.discourse-cdn.com/v4/letter/j/85f322/32.png) [@JORGE.REYES](https://forum.inductiveautomation.com/u/JORGE.REYES)\
**Post date:** [March 16, 2021, 3:45pm UTC](https://forum.inductiveautomation.com/t/tags-slow-performance/44530/1 "2021-03-16T15:45:32Z")

</div>

Hello there,  
I have some expression tags that evaluates every second, this is to have some timers and know how much time a machine last in every state.  
This is the code:

```auto
if(isNull({[.]Time_Running})
		,0
		,if	( {[.]Running}= True
						,forceQuality({[.]Time_Running}+1)
						,forceQuality({[.]Time_Running})
			)
		)

```

This used to work perfect but since last week it is showing a “Slow performance” message in tag diagnostic and I’m loosing information.  
I don’t see anything weird on the logs, and my CPU performance is at 50%

What should I check to see if is wrong?  
Note: I have ignition 7.9

Thanks in advance.