Forum Discussion

FLEIXXUT's avatar
FLEIXXUT
Honored Guest
31 days ago

Quest link + SteamVR loads VRAM to the limit

I have an Asus ROG G14 laptop (2024)
Specifications:
Ryzen 7 8845HS
RTX 4060 8GB
16 GB RAM

Last year, I was using a Pico 4 headset and didn’t notice any problems. Then, after a year, I bought a new Quest 3 for PC gaming (I sold the Pico last year). I downloaded Quest Link to connect to the PC via cable, connected it, and launched SteamVR. It worked fine, but when I started games, periodic lag and stuttering appeared immediately. When launching HL:Alyx, a message about insufficient video memory showed up in the menu.

I spent almost a whole day researching this issue but couldn’t find a good solution. The problem is that when I connect the headset to the PC, Quest Link immediately consumes 2-3 GB of video memory. Then I launch SteamVR, and the video memory usage goes up to around 6 GB. When I start HL:Alyx through SteamVR, there is practically no video memory left.

I tried different settings in the Debug Tool and also changed the headset’s resolution and refresh rate. The result is the same — not enough video memory, causing lag and an uncomfortable gameplay experience.

Is this a bug, or am I missing something?

Meta Quest 3
PCVR

3 Replies

  • steve_40's avatar
    steve_40
    Expert Trustee
    31 days ago

    Firstly, check your Windows graphics advanced settings and make sure Hardware-accelerated GPU scheduling is disabled.

    Next, see this thread here, where I wrote detailed tips on running HL Alyx:

    https://communityforums.atmeta.com/discussions/dev-pcvr/re-my-pc-dont-cover-the-min-spec--with-rtx-4050/1343903/replies/1343922

    • FLEIXXUT's avatar
      FLEIXXUT
      Honored Guest
      30 days ago

      The problem is that I want to play via a cable, since I bought a good one that also charges the headset, and honestly, it’s just more convenient for me to use it. I disabled Hardware-accelerated GPU scheduling back when I was trying to fix Quest Link. Is there really no way to play via a wired connection? As far as I know, Steam Link doesn’t support it. ALVR, by the way, didn’t solve the problem for me either — it’s an inconvenient app.

      • steve_40's avatar
        steve_40
        Expert Trustee
        30 days ago

        You can still connect to PC wirelessly and have a charge cable connected to the Quest battery or external battery at the same time 🤷. I get no improvement in performance playing wired vs wireless, and I’m using an old wifi 5 router.