[BON-18556] External FX cannot ping delay compensation

When using external hardware insert effects, Cubase reports 0ms every single time I try to ping to calculate delay.

  1. Set up external effect in connections window
  2. Route a converter input directly to a converter output to create a loopback - this way any external effects cannot give misleading results.
  3. Tell Cubase to calculate the delay
  4. Cubase reports ALWAYS reports 0ms, which I know must be incorrect.
  5. If I route through external effects instead of using a converter loopback, Cubase still reports 0ms delay.

Already reported.

[CHEST-1278] and [BON-18556]