# \[GearVR\] Changing IPD via STEREO E=val doesn't work

**URL:** <https://forums.unrealengine.com/t/gearvr-changing-ipd-via-stereo-e-val-doesnt-work/375404>\
**Category:** Rendering\
**Tags:** unreal-engine, gear-vr, UE4, question\
**Created:** [November 4, 2016, 3:45pm UTC](https://forums.unrealengine.com/t/gearvr-changing-ipd-via-stereo-e-val-doesnt-work/375404 "2016-11-04T15:45:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MiKom](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@MiKom](https://forums.unrealengine.com/u/MiKom)\
**Post date:** [November 4, 2016, 3:45pm UTC](https://forums.unrealengine.com/t/gearvr-changing-ipd-via-stereo-e-val-doesnt-work/375404/1 "2016-11-04T15:45:40Z")

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Hi,

I’m trying to tweak IPD in my application on runtime. I’ve found out that the easiest way would probably to invoke `STEREO E=0.007` command.

Unfortunately, it seems that this is ignored on GearVR because there’s no effect.

On the other hand, `STEREO CS=1.1` seems to be working, but it isn’t suitable for my needs.

Also, from what I could read from `GearVR.cpp`, it should be possible to override IPD settings via the following lines in `DefaultEngine.ini`:

```
[GearVR.Settings]
bOverrideIPD=True
IPD=0.12

```

This doesn’t seem to work either.

It all boils down to the fact, that rendering via GearVR seems to ignore whatever is set via `FHeadMountedDisplay::SetInterpupillaryDistance`

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**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\
**Post date:** [November 11, 2016, 2:45pm UTC](https://forums.unrealengine.com/t/gearvr-changing-ipd-via-stereo-e-val-doesnt-work/375404/2 "2016-11-11T14:45:41Z")

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Hi MiKom,

I’ve submitted a ticket for this which you can track here: [Unreal Engine Issues and Bug Tracker (UE-38516)](https://issues.unrealengine.com/issue/UE-38516)

Thanks!

Tim

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**Author:** ![smbv1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@smbv1](https://forums.unrealengine.com/u/smbv1)\
**Post date:** [August 3, 2017, 3:18am UTC](https://forums.unrealengine.com/t/gearvr-changing-ipd-via-stereo-e-val-doesnt-work/375404/3 "2017-08-03T03:18:08Z")

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I can’t believe this feature still not solved!!!