topic Re: Flicker occurred when using VR in FlexSim Forum

Flicker occurred when using VR

yi_ting_c — Thu, 04 Jul 2019 02:35:45 GMT

[ FlexSim 19.1.0 ]

Hi,I build up a model which import my own 3D Object, and also upgrade graphic card to improve performance.

But still have serious flicker when using HTC VIVE.

Could you help me to know how to solve this problem?

My graphic card is GEFORCE RTX 2080.

Re: Flicker occurred when using VR

benjamin_w2 — Fri, 05 Jul 2019 16:39:16 GMT

Hi @yi ting C,

Can you attach your model? Make sure to tag @phil.bobo to look at.

Re: Flicker occurred when using VR

yi_ting_c — Wed, 10 Jul 2019 07:48:42 GMT

Hi @Benjamin W2 and @phil.bobo ,

Consider of technical secret of my company，is it possible to provide the model by email ? Thank you.

Re: Flicker occurred when using VR

benjamin_w2 — Wed, 10 Jul 2019 14:35:27 GMT

@yi ting C, we have a couple of options. You could send it to my email which is ben.wolfley@flexsim.com or you could ask new question and make it a private question. Only FlexSim employees can see private questions.

Re: Flicker occurred when using VR

philboboADSK — Wed, 10 Jul 2019 17:55:44 GMT

If by "flicker" you actually mean "judder" (laggy motion as you move your head), then the issue is that your framerate dropped below the required 90 FPS for the HTC Vive.

You must maintain a frame rate of 90 FPS in VR on the HTC Vive. You can show the framerate in FlexSim's 3D view by enabling File > Global Preferences > Show FPS Counter.

If the framerate of your model is less than 90 FPS, then you need to optimize your model to render faster to use the HTC Vive.

The Oculus Rift uses asynchronous spacewarp to compensate for judder when below 90 FPS, but the HTC Vive does not, so you must maintain 90 FPS for the HTC Vive.

You can improve your framerate in FlexSim by optimizing your 3D shapes by merging meshes with the same material together before importing the shape into FlexSim.

Re: Flicker occurred when using VR

braydn_t — Wed, 14 Aug 2019 22:24:18 GMT

@yi ting C

Did this answer help you? If so, could you please accept it? If not, could you let us know what else we can do to help you? Thanks!