AudioVideoObserver does not fire for low-bandwidth users

[g8z]

We have an observer for new video tiles, and have noticed that when computers with throttled bandwidth, this never fires, even after waiting a long time.

const initVideoEvent = async (): Promise<void> => {
    const audioVideoObserver: AudioVideoObserver = {
        videoTileDidUpdate: (tileState: VideoTileState) => {
            // we never see Firefox tileState come through

Is there any way to set the sensitivity or threshold when this observer "fires" to allow for low bandwidth users?

For example, this is happening at the moment for us:

User 1: Normal Chrome user (not throttled)
User 2: Firefox user (throttled bandwidth)
User 1: Turns on Video
User 2: Turns on Video

Even after a long wait, User 1 never sees User 2's video, even though other Chime events come through (like roster changes).