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Controller jitters, its shadow doesn't

Hi, I'm working on an exterior vr scene with foliage and fully dynamic lighting. Since I've added grass instanced foliage, when looking at it the controller jitters a lot, like the game runs at 15-20 fps. But it runs at 40-50 and the headset nor the image jitter. I've noticed that the controller's shadow doesn't jitter at all and it's movement is fluid.

I managed to optimize the foliage (downed from 30k to 2k meshes) but it doesn't change anything. I tried both 4.14 and 4.15 versions, also forward shading made me earn 10-15 precious fps, but dynamic shadows only work in 4.15 with forward rendering for now.

Actually looking at the grass the game runs (in 4.15 editor) at 60 fps (16ms). In VR at 45fps (20-22ms).

Any idea about how to correct this ? Should I remove more grass ? Is there any way to use foliage in VR in a realistic way for a lawn ?

Thanks a lot

Product Version: UE 4.14
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asked Feb 08 '17 at 03:52 PM in VR

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Teapot Creation
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avatar image Teapot Creation Feb 13 '17 at 01:40 PM

I managed to make some optimizations, but the problem persists : Looking at the grass i've got around 110 FPS (8-9 ms each). Using VR the frames take 11ms to be drawn, the helmet move is fluid but the controller still jitters a lot. When looking at certain points of my map, frame time goes to 10-11 and the controller movement is fluid. But even some points of view without foliage can go up to 22ms each frame...

avatar image Teapot Creation May 09 '17 at 07:42 AM

Hi, after lots of tests the problem still persists, even in an empty project. I updated firmwares, charged the controllers batteries, tried all that I can think about.
Does anyone have a similar issue ?

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2 answers: sort voted first

try ticking "disable low latency update" on the Details panel for the motion controller components

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answered May 11 '17 at 12:55 AM

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avatar image Teapot Creation May 11 '17 at 05:55 AM

Thanks a lot !

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