Jitsi server behind a firewall and bandwidth discovery

I sometimes had problems with users on unstable connections so I’m trying to decide how to configure this section of the config.js:

    // disableRtx: false,

    // Disables or enables TCC (the default is in Jicofo and set to true)
    // (draft-holmer-rmcat-transport-wide-cc-extensions-01). This setting
    // affects congestion control, it practically enables send-side bandwidth
    // estimations.
    // enableTcc: true,

    // Disables or enables REMB (the default is in Jicofo and set to false)
    // (draft-alvestrand-rmcat-remb-03). This setting affects congestion
    // control, it practically enables recv-side bandwidth estimations. When
    // both TCC and REMB are enabled, TCC takes precedence. When both are
    // disabled, then bandwidth estimations are disabled.
    // enableRemb: false,

    // Enables ICE restart logic in LJM and displays the page reload overlay on
    // ICE failure. Current disabled by default because it's causing issues with
    // signaling when Octo is enabled. Also when we do an "ICE restart"(which is
    // not a real ICE restart), the client maintains the TCC sequence number
    // counter, but the bridge resets it. The bridge sends media packets with
    // TCC sequence numbers starting from 0.
    // enableIceRestart: false,

How do I debug whether TCC and REMB are working correctly for other users? My server is behind a very strict firewall and I suspect users in another network may be having unexpected issues.

The standards mentioned:
https://tools.ietf.org/html/rfc4588
https://xmpp.org/extensions/xep-0215.html
https://tools.ietf.org/html/draft-holmer-rmcat-transport-wide-cc-extensions-01
https://tools.ietf.org/html/draft-alvestrand-rmcat-remb-03