# Improvements to parametric modeling **URL:** \ **Category:** Release notes\ **Created:** [April 28, 2024, 7:54pm UTC](https://discourse.shapr3d.com/t/improvements-to-parametric-modeling/31577 "2024-04-28T19:54:18Z")\ **Posts on this page:** 1\ **Showing post:** 27

**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\ **Post date:** [April 30, 2024, 8:52am UTC](https://discourse.shapr3d.com/t/improvements-to-parametric-modeling/31577/27 "2024-04-30T08:52:21Z")

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 additional 5-10k hidden parts, which can affect performance in certain cases (not necessarily though). Here is what you can do until we release a fix: 1. Check if you can see a folder called BACKUP\_\_AUTOGENERATED in the items menu. 2. If you can see it, click on it. 3. Open the History panel. 4. Make sure that the “relevant” filter is on in the history panel. You should see a single “Import xx” step. 5. Right click/long tap on the Import step. 6. Click delete. 7. You can also delete the empty BACKUP\_\_AUTOGENERATED folder. It’s quite unlikely that you are impacted by this issue, but if you are, and you are using an older device, this might affect performance. Probably @APDesignMachine 's workspace was also impacted by this issue, which caused the performance degradation. https://www.loom.com/embed/ef9574a31bad4b72acf754b532bc3870 --- _[View the full topic](https://discourse.shapr3d.com/t/improvements-to-parametric-modeling/31577)._