# Are splines slow on old ipad?

**URL:** <https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016>\
**Category:** Modeling Questions\
**Created:** [March 29, 2020, 3:07am UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016 "2020-03-29T03:07:06Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![RonJeffries](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/ronjeffries/32/5708_2.png) [@RonJeffries](https://discourse.shapr3d.com/u/RonJeffries)\
**Post date:** [March 29, 2020, 3:07am UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/1 "2020-03-29T03:07:06Z")

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i use shapr on my new ipad pro and an old one (one at a time). tonight on the old one, i was drawing splines and it seemed shapr couldn’t keep up. after a few points i couldn’t drop a fit point and the curve end jittered around not keeping up with pen.

is my old pad just too slow?

thanks!

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**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:** [March 29, 2020, 5:45am UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/2 "2020-03-29T05:45:06Z")

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Hi Ron,

No, it shouldn’t be an issue. Can you post a few screenshots and send the workspace file to [support@shapr3d.com](mailto:support@shapr3d.com)? We would love to take a look at the problem.

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**Author:** ![RonJeffries](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/ronjeffries/32/5708_2.png) [@RonJeffries](https://discourse.shapr3d.com/u/RonJeffries)\
**Post date:** [March 29, 2020, 2:04pm UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/3 "2020-03-29T14:04:41Z")

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weirdly, it’s working fine this morning. possibly closing the file helped?

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**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:** [March 29, 2020, 4:56pm UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/4 "2020-03-29T16:56:34Z")

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Could be, yes. If this happens next time, it would be super helpful if you could make a screen recording of the issue. Performance is one of our top priorities. Thanks for reporting the issue!

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**Author:** ![omgoleus](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/omgoleus/32/8852_2.png) [@omgoleus](https://discourse.shapr3d.com/u/omgoleus)\
**Post date:** [January 10, 2021, 11:26pm UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/5 "2021-01-10T23:26:14Z")

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Hello, I’m replying to an old conversation because this seems to be the same issue. I am trying to work with a drawing that I created in a vector drawing program. I converted it to dxf and imported, but it is _extremely_ slow to do any operations at all. It is a fairly large spline, with several thousand nodes I think, but it’s more or less instantaneous in the 2D drawing program, so I know it’s not excessive.

In Shapr3d on a reasonably new iPad Pro, or also on the beta on a newish Macbook Pro, it takes several minutes just to select the drawing. Things like “translate 20 mm vertically” take a similar amount of time. I extruded it and then tried to intersect, and that took upwards of 10 minutes for the progress animation to finish.

I’m not able to include it as an attachment because I have a new account, but hopefully this link lets you get the file. You should be able to reliably reproduce this issue by:  
-Create a new empty Shapr3d document  
-Import the dxf file  
-Double-tap to select the whole spline, or else tap the folder  
-select Move/Rotate  
-translate 20 mm upwards

That last step takes several minutes, for me.

> **[iCloud.com](https://www.icloud.com/iclouddrive/0OJH3AWUgAR9qLDmGVnBiENxw#Tile_Vines)**

Thanks!

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**Author:** ![realdrogo](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/realdrogo/32/8459_2.png) [@realdrogo](https://discourse.shapr3d.com/u/realdrogo)\
**Post date:** [January 11, 2021, 3:53am UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/6 "2021-01-11T03:53:55Z")

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I had the same issue with a spline heavy imported file. It was a topography map with several dozen contour lines, each made of several dozen splines. Thousands of nodes. It was unusable in S3D as each selection took minutes.

I ended up redrawing it in S3D using one long spline for each contour line. Took all day but it was worth it.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/b/b37a2feda8997bc74b3eb79465559d4b0155befd.jpeg) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/8/8d416f0740ef18862ce638d0f20ebb662e3e6ff2.jpeg) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/e2453ef2cc606fbdbdea1f46ac8ffade69435980.jpeg) ![image](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/2X/e/e68372286ed52bba46bf12554fe57855713a86fd.jpeg)

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**Author:** ![MrJack88](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/mrjack88/32/8138_2.png) [@MrJack88](https://discourse.shapr3d.com/u/MrJack88)\
**Post date:** [January 11, 2021, 5:58am UTC](https://discourse.shapr3d.com/t/are-splines-slow-on-old-ipad/7016/7 "2021-01-11T05:58:54Z")

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Many spline does take a toll on iPad old/new all same