# Inconsistent frame rate

**URL:** <https://discourse.psychopy.org/t/inconsistent-frame-rate/2734>\
**Category:** Builder\
**Created:** [July 10, 2017, 8:48am UTC](https://discourse.psychopy.org/t/inconsistent-frame-rate/2734 "2017-07-10T08:48:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aso78123](https://avatars.discourse-cdn.com/v4/letter/a/8e7dd6/32.png) [@aso78123](https://discourse.psychopy.org/u/aso78123)\
**Post date:** [July 10, 2017, 8:48am UTC](https://discourse.psychopy.org/t/inconsistent-frame-rate/2734/1 "2017-07-10T08:48:57Z")

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Hi all,

I run a PsychoPy-experiment (v. 1.83.01) on a Windows Computer. I set it up with the builder view and included hard code by inserting several code snippets. After running the Experiment I got the following message:

#### Running: C:\Users\sommeranwg\Desktop\Experiment2\EG2\_IIcts\_lastrun.py

5.9120 WARNING Couldn’t measure a consistent frame rate.

- Is your graphics card set to sync to vertical blank?
- Are you running other processes on your computer?

7.3981 WARNING t of last frame was 1187.69ms (=1/0)  
8.0919 WARNING t of last frame was 67.79ms (=1/14)  
9.3802 WARNING t of last frame was 33.84ms (=1/29)

I looked in the Task Manager, but there were no other processes running.

I couldn’t check the other proposal for syncing to vertical blank,  
because I don’t know what to do, where I have to look it up.

May anyone help me with a detailled description, what I have to do?  
That would be great!

Thanks a lot.

Cheers Angelika

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**Author:** ![jon](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/jon/32/22_2.png) [@jon](https://discourse.psychopy.org/u/jon)\
**Post date:** [July 13, 2017, 12:50pm UTC](https://discourse.psychopy.org/t/inconsistent-frame-rate/2734/2 "2017-07-13T12:50:32Z")

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Hard to knwo without a lot more information about your experiment but, basically, either you need a simpler experiment (e.g. fewer stimuli) or a faster computer (e.g. better graphics card)