link with lowest delay work(very important)

Dear all ,
**i have routerboard RB951UI and i have 3 different internet resources ,the three was connected to the router , i don’t want to make load balance but i want the link which has the lowest delay work automatically .

(that mean one link with lowest delay work and the other two link standby).**

any help please?

Fascinating…

Make one script that ping individually same server (game server I suppose…) from different ISP, and leave enabled only the one with lowest latency.

thanx
any other solution

any other solution

the other solution is to do it manually…

It is good solution I would do it in the same way.