# Not all elements are displayed
**URL:** https://discourse.paraview.org/t/not-all-elements-are-displayed/3936
**Category:** ParaView Support
**Created:** [April 1, 2020, 12:31pm UTC](https://discourse.paraview.org/t/not-all-elements-are-displayed/3936 "2020-04-01T12:31:57Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@xgarnaud](https://discourse.paraview.org/u/xgarnaud)
#### Post date: [April 1, 2020, 12:31pm UTC](https://discourse.paraview.org/t/not-all-elements-are-displayed/3936/1 "2020-04-01T12:31:58Z")
Dear all,
I have a relatively large surface mesh, with 36M triangles (18M nodes), stored either as a .vtm or .ex2 file (same issue in both cases). There are 46 blocks.
I can load both files but only some of the triangles are displayed (I believe entire blocks are missing). However, the missing blocks appear when I interact with the view.
I have the same issue with Paraview 5.6, 5.7 and 5.8
Is there a setting I am missing?
Best regards,
Xavier
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### Author:  [@wascott](https://discourse.paraview.org/u/wascott)
#### Post date: [April 1, 2020, 3:33pm UTC](https://discourse.paraview.org/t/not-all-elements-are-displayed/3936/2 "2020-04-01T15:33:03Z")
No clue. Sounds like a bad dataset. Could you make a much simpler dataset, say 3 blocks, and then post it here?
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 2, 2020, 1:48am UTC](https://discourse.paraview.org/t/not-all-elements-are-displayed/3936/3 "2020-04-02T01:48:44Z")
> [@xgarnaud](#):
>
> the missing blocks appear when I interact with the view.
A work around is to disable LOD in the settings.
I agree with @wascott, probably a bad dataset, please share a small part of it that still shows this behavior.
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### Author:  [@xgarnaud](https://discourse.paraview.org/u/xgarnaud)
#### Post date: [April 2, 2020, 1:51pm UTC](https://discourse.paraview.org/t/not-all-elements-are-displayed/3936/4 "2020-04-02T13:51:53Z")
[F22.ex2](https://discourse.paraview.org/uploads/short-url/piCwfNiDBkndIGUvyNwGwZko0Hr.ex2) (1.2 MB) Thank you both for your responses.
I tried generating a toy dataset with the same procedure, but I cannot see the same issue with it (it is attached just in case - there are plenty of geometric problems such as non connected surfaces or double surfaces, but it loads OK). I am sorry I cannot share the full geometry.
I tried to investigate a bit more the issue I am seeing:
- It does not appear when I load the same file on Linux (either with v5.4 from debian or with v5.8 from the Paraview website)
- On OSX (with all thee versions mentioned in my previous post), I tried loading only selected blocks. It seems the issue appears when the number of elements exceeds a certain threshold (somewhere 33.4 and 33.6 million triangles), independently on which blocks are loaded.
If I deactivate LOD, then surfaces are missing both when I interact with the view and when I don’t.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 6, 2020, 8:05am UTC](https://discourse.paraview.org/t/not-all-elements-are-displayed/3936/5 "2020-04-06T08:05:39Z")
> [@xgarnaud](#):
>
> If I deactivate LOD, then surfaces are missing both when I interact with the view and when I don’t.
You need to set the threshold to a high number, not 0.