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Question Low FPS when using VR with HDRP

Discussion in 'VR' started by y_nozaki, Jan 10, 2023.

  1. y_nozaki

    y_nozaki

    Joined:
    May 14, 2021
    Posts:
    1
    Hi,

    I am trying to implement VR with HDRP.

    To check the FPS, I am trying it on an empty scene.
    I get 120 fps in 3D, but only 45 fps in VR.

    Is there any way to increase the FPS?

    The operating environment is as follows:
    ・Meta Quest Pro
    ・Unity2021.3.15f1
    ・XR Plugin Manegement ver4.3.1
    ・Oculus Integration ver47.0
    ・GPU：NVIDIA GeForce GTX 1070 with Max-Q Design
    ・CPU：Intel(R) Core(TM) i7-7700HQ
    ・RAM：16GB

    Thank you.
     
    y_nozaki, Jan 10, 2023
    #1

  2. Qleenie

    Qleenie

    Joined:
    Jan 27, 2019
    Posts:
    868
    Switch off all Post Processing and see where you get with this. The GPU is not the fastest, especially for VR, and HDRP is quite heavy. Also you need to be aware that you need to render twice the pixel in VR, so a big delta between 3D and VR is expected.
     
    Qleenie, Jan 10, 2023
    #2

  3. DevDunk

    DevDunk

    Joined:
    Feb 13, 2020
    Posts:
    5,049
    Yeah that laptop is going to have trouble with HDRP in VR.
    Make sure to use single pass instanced, and remove all features like post processing, water and sky rendering, and more.
    Then it should be relatively okay.

    (Also note that hdrp doesn't run on android/quest native if you're planning to do that)
     
    DevDunk, Jan 10, 2023
    #3