Changes between Version 5 and Version 6 of Ticket #9640, comment 4


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Timestamp:
Sep 6, 2023, 2:02:08 PM (2 years ago)
Author:
Tom Goddard

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  • Ticket #9640, comment 4

    v5 v6  
    1515If I lower the Quest AirLink bit rate to 20 Mbps or 10 Mbps dynamic the glitching goes away although visual quality is a bit worse.  At 30 Mbps I start getting glitches again.  The bit rate setting is in the Quest headset when connected by AirLink, the icon bar has a facemask icon on the left that allows setting bit rate.  Maybe this old Windows 10 machine is too slow at compressing the video.  Should test the new Windows 11 Nvidia 3070 VR machine to see if it exhibits the same glitching.
    1616
    17 Got similar results with AirLink at home with 802.11ac router using Quest 2 in same room as router with Windows 10 Nvidia 1080-Ti plugged into router by ethernet cable.  Glitching about once per few seconds at 100 Mbps, no glitches at 30 Mbps, a glitch every 20 seconds at 50 Mbps.  The wifi was also being used for VNC (my wife) at the same time.  OpenXR and SteamVR gave very similar results with AirLink.  Link cable for some reason would not work (using old USBA cable), computer would sometimes recognize Quest 2, often not, dropped it quickly with a usb device malfunction warning in Windows.  Might be loose usbc connection to headset or old USBA cable and old motherboard USB (circa 2017) was not up to the task.  But I think I used link cable successfully in the past.  Tried 4 different USB ports.
     17Got similar results with AirLink at home with 802.11ac router using Quest 2 in same room as router with Windows 10 Nvidia 1080-Ti plugged into router by ethernet cable.  Quest reports "excellent" signal strength, 5GHz, 866 Mbps send/receive speed for wifi. My home wifi router at 5 GHz is using 80 MHz channel width on channel 36.  Glitching about once per few seconds at 100 Mbps, no glitches at 30 Mbps, a glitch every 20 seconds at 50 Mbps.  The wifi was also being used for VNC (my wife) at the same time.  OpenXR and SteamVR gave very similar results with AirLink.  Link cable for some reason would not work (using old USBA cable), computer would sometimes recognize Quest 2, often not, dropped it quickly with a usb device malfunction warning in Windows.  Might be loose usbc connection to headset or old USBA cable and old motherboard USB (circa 2017) was not up to the task.  But I think I used link cable successfully in the past.  Tried 4 different USB ports.