MOAP Interaction on an in-world object is slow if there's also a HUD with MOAP interaction.

Environment

Second Life Release 7.2.0.16356654553 (64bit)
Release Notes

You are at 65.0, 38.7, 38.5 in Danger! Danger! located at simhost-03e3afe4338435f44.agni
SLURL: http://maps.secondlife.com/secondlife/Danger%21%20Danger%21/65/39/39
(global coordinates 261,185.0, 249,639.0, 38.5)
Second Life Server 2025-04-24.14648572313
Release Notes

CPU: Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz (3491.91 MHz)
Memory: 32610 MB
OS Version: Microsoft Windows 10 64-bit (Build 19045.6093)
Graphics Card Vendor: NVIDIA Corporation
Graphics Card: NVIDIA GeForce GTX 1080/PCIe/SSE2

Windows Graphics Driver Version: 32.0.15.6590
OpenGL Version: 4.6.0 NVIDIA 565.90

Window size: 1757x1385
Font Size Adjustment: 96pt
UI Scaling: 1
Draw distance: 128m
Bandwidth: 3000kbit/s
LOD factor: 1.375
Render quality: 3
Texture memory: 8192MB
Disk cache: Max size 1638.4 MB (13.2% used)

J2C Decoder Version: KDU v7.10.4
Audio Driver Version: OpenAL, version 1.1 ALSOFT 1.24.2 / OpenAL Community / OpenAL Soft: OpenAL Soft
Dullahan: 1.14.0.202408091639
CEF: 118.4.1+g3dd6078+chromium-118.0.5993.54
Chromium: 118.0.5993.54
LibVLC Version: 3.0.21
Voice Server Version: Vivox 4.10.0000.32327.5fc3fe7c.5942f08

Packets Lost: 2/34,723 (0.0%)
July 22 2025 11:31:43

Description

MOAP Interaction on an in-world object is slow if there's also a HUD with MOAP interaction.

Reproduction steps

Note: This does not reproduce 100% of the time so there may be some other precondition.

1. Create a prim and put the following script in it

default {
    state_entry() {
        llSetLinkMedia( LINK_THIS, 0, [
            PRIM_MEDIA_CURRENT_URL, "http://lecs-viewer-web-components.s3.amazonaws.com/v3.0/agni/avatars.html",
            PRIM_MEDIA_HOME_URL, "http://lecs-viewer-web-components.s3.amazonaws.com/v3.0/agni/avatars.html",
            PRIM_MEDIA_FIRST_CLICK_INTERACT, TRUE,
            PRIM_MEDIA_AUTO_PLAY, TRUE,
            PRIM_MEDIA_CONTROLS, PRIM_MEDIA_CONTROLS_MINI
        ] );
    }
}

2. Take a copy of the prim, attach it to your HUD and rotate it so the Media is visible
3. Set Preferences > Sound & Media > Media first-interact: Owned objects.
4. Move your cursor over the media on the in-world object and note how quickly it reacts.

Observed: There's a delay of more than a second on the media of the in-world object.

https://github.com/user-attachments/assets/041144f6-c45b-4b6e-82ff-8c6e5ba11326

Expected: Less delay.

Workaround: Remove the MOAP from your HUD, and the in-world MOAP performs as expected.

Start by reproducing the delay with the supplied prim script, an attached HUD copy, and the Owned objects media-first-interact setting. Trace the viewer's MOAP input handling for in-world objects when a HUD media surface is also present; done means the in-world media responds without the observed delay while the HUD MOAP remains attached.