# Shapr3d runs very slow on PC and Ipad after parametric update

**URL:** <https://discourse.shapr3d.com/t/shapr3d-runs-very-slow-on-pc-and-ipad-after-parametric-update/31664>\
**Category:** Modeling Questions\
**Created:** [May 3, 2024, 4:12am UTC](https://discourse.shapr3d.com/t/shapr3d-runs-very-slow-on-pc-and-ipad-after-parametric-update/31664 "2024-05-03T04:12:14Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Xdrakosha](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/xdrakosha/32/24881_2.png) [@Xdrakosha](https://discourse.shapr3d.com/u/Xdrakosha)\
**Post date:** [May 3, 2024, 4:38am UTC](https://discourse.shapr3d.com/t/shapr3d-runs-very-slow-on-pc-and-ipad-after-parametric-update/31664/2 "2024-05-03T04:38:09Z")

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Let me search for you 🤣

> [@Terbaik](#):
>
> Shapr3d runs very slow and lagging on my PC and Ipad.

> [@Improvements to parametric modeling](https://discourse.shapr3d.com/t/improvements-to-parametric-modeling/31577):
>
> Based on your feedback, we’ll look into improving the following behaviors. The way move/copy works. We’ll revisit some of the changes that were introduced with this release. Most likely we won’t roll it back completely, but we’ll look into how to improve it. We’ll add an option to collapse the history, and remove all the dependencies. After the collapse, the history will be recorded again, but whenever you want to discard the parametric relationships, you’ll be able to do so. Performance issue…

> [@Terbaik](#):
>
> But the Autogenerated Backup folder appears containing complete files, exactly the same as they were after forcing the application to close.

> [@Improvements to parametric modeling](https://discourse.shapr3d.com/t/improvements-to-parametric-modeling/31577/27):
>
> We’ve found an issue that might cause performance issues for some users. Based on our current understanding it should impact only a couple hundred users, but if you are working with larger assemblies (5k+ parts), this might help a bit if you are experiencing slowdowns. In some cases, Shapr3D automatically generates a hidden folder in the Items menu, called BACKUP\_\_AUTOGENERATED. This increases the number of parts in your workspace, so if you work with 5k parts, you might end up with an addition…

> [@Terbaik](#):
>
> The subtract tool is acting strange, when I set it to keep original file ON, it always goes back to OFF. I didn’t even realize I lost an important body because of this.

> [@New Subtract bug](https://discourse.shapr3d.com/t/new-subtract-bug/31658):
>
> For whatever reason, Subtract reverts to None every time I access it. I want to remain on"-Removed Bodies" just like it used to. iPad Pro, app version 5.601.0.6803

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