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Vitor_Borges's avatar
Vitor_Borges
Copper Contributor
May 23, 2024

Live preview stalled duo to low bandwidth or loss of connectivity.

Hi all
I hope this post can help your guys having the same problem as me.

Basically, I want to share my view with Hololens 2 to a TV while I make a guides. Being more specifical, the TV is a Samsung "The Frame".  So, I using the web device portal for Hololens 2 in my laptop, from the laptop to TV a HDMI cable for share the screen.

The problem problem is: Are actually many issues with the "live preview" feature from device portal. When the live starts (doesn't matter if is 720p or 480p) it works fine, as soon as I open any guides training, the live mode begin to have lagging trouble.

Error description: Live preview stalled duo to low bandwidth or loss of connectivity. If this problem persists, consider using a lower quality stream.

HoloLens
VR
  • iu360's avatar
    iu360
    Copper Contributor
    Nov 18, 2024

    Hello

    To address the issue of lagging when using the "live preview" on HoloLens 2 via the web device portal, particularly when connected to a TV for guide training, here are some recommendations:

    Lower Stream Quality: Although you mentioned trying 720p and 480p, consider further lowering the stream quality. Even slight adjustments in resolution can reduce the bandwidth requirement and improve stability.

    Wired Connections: Ensure that both your laptop and HoloLens 2 are using stable and wired network connections if possible. Wi-Fi can cause intermittent connectivity issues, leading to the lag you're experiencing, especially when streaming video.

    Check Network Bandwidth: Analyze your network's available bandwidth and usage. Other devices on the same network might be consuming significant resources, impacting the live preview's performance. Disconnect unnecessary devices to free up bandwidth.

    Update Software and Drivers: Ensure that both your HoloLens 2 and the web device portal software are up-to-date. Microsoft frequently releases updates that address performance issues and improve connectivity.

    Optimize Display Settings: On your laptop, adjust display settings to ensure that you're not overloading the connection with unnecessary display enhancements. Simplifying the display output can sometimes reduce lag.

    Alternative Streaming Methods: If the lag persists, consider alternative streaming methods like using Miracast or a dedicated streaming app that might provide a more stable connection than the web device portal.

    These tips should help improve the "live preview" experience, especially when running demanding applications like guide training on the HoloLens 2.

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