# vtkMRMLSequenceBrowserNode Playback Speed

**URL:** <https://discourse.slicer.org/t/vtkmrmlsequencebrowsernode-playback-speed/32167>\
**Category:** Support\
**Created:** [October 11, 2023, 6:16pm UTC](https://discourse.slicer.org/t/vtkmrmlsequencebrowsernode-playback-speed/32167 "2023-10-11T18:16:15Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![nicholas489](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nicholas489/32/67827_2.png) [@nicholas489](https://discourse.slicer.org/u/nicholas489)\
**Post date:** [October 11, 2023, 6:16pm UTC](https://discourse.slicer.org/t/vtkmrmlsequencebrowsernode-playback-speed/32167/1 "2023-10-11T18:16:15Z")

</div>

Machine 1:  
Operating System: macOS 14.0  
Processor: Apple M2 CPU @ 3.00 GHz, 3000 MHz, 8 Core(s) 8 Logical Processor(s)  
Installed Physical Memory: 16 GB

Machine 2:  
Operating System: Windows 10 x64-based PC  
Processor: Intel® Core™ i5-6300U CPU @ 2.40GHz, 2400 Mhz, 2 Core(s), 4 Logical Processor(s)  
Installed Physical Memory (RAM): 8.00 GB

Slicer version: 5.4.0 stable release  
Expected behaviour: After loading .mha images into vtkMRMLSequenceBrowserNode to then display this sequence image-by-image on 3d slicer at a default rate of 1 image per second, and editing the method `SetPlaybackRateFps` to display say for example 3 images per second  
Actual behaviour: Machine 1 does the expected behaviour fine without any issues, but Machine 2 will start skipping to later images in the sequence (while playing the sequence went from Image #19 to Image #32 in 1 second with `SetPlaybackRateFps` of 3)

Kindly let me know if this issue is occuring due to hardware limitations or any other reason as to why this could be occuring

---

<div class="post-metadata">

**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [October 12, 2023, 3:20am UTC](https://discourse.slicer.org/t/vtkmrmlsequencebrowsernode-playback-speed/32167/2 "2023-10-12T03:20:23Z")

</div>

Machine2 cannot replay the sequence at the requested rate. This computer is about 8 years old (has a 6-th generation Intel CPU - while the current generation is 13), so it is normal that it is much slower.

To play at the maximum rate without skipping: you can disable “Enable item skip during playback” option in Sequences module / Browser / Advanced.

---

<div class="post-metadata">

**Author:** ![nicholas489](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nicholas489/32/67827_2.png) [@nicholas489](https://discourse.slicer.org/u/nicholas489)\
**Post date:** [October 13, 2023, 7:34pm UTC](https://discourse.slicer.org/t/vtkmrmlsequencebrowsernode-playback-speed/32167/3 "2023-10-13T19:34:50Z")

</div>

Thank you for your reply, it seems to be working now!