RUTC50 failoover functions

I own a RUTC50 and i tried the failover function, it works but it is only based on 100% shutdown connexion.

I have a sim card and a starlink connexion.

I give priority to the simcard because it is cheaper and speed is higher.

But when i go in remote place (i use ot on a boat) the simcard connexion is not broken but very slow.

The rutc50 consider it still work so the failover function keep the simcard as the active connexion.

Me i d like in these situation the failover function realize the flow is not good and move to the starlink.

Do you know hox to do it?

Thx