@antonioabb 

In Load Balancing--Link Backup, set low ping wan as primary wan and high ping wan as backup wan.

  @antonioabb 

Policy routing, choose All LAN use low ping WAN as priority.

  @Somnus 

I tried, this works, but the other internet line is never used even while I'm surfing

  @gatewait 

mode?

  @antonioabb 

If you want the rules you set to work for a period of time, you can select timing, which sets a time period in Preferences--Time Range.
If you want the rules you set to work all the time, you can choose any one of the Fairover, then enable in Status and click OK to save.

  @gatewait 

okay.  but that's not what I'm looking for.  I need to have both lines active, both lines navigating, but when I go to do the speed test I want it to use the Tiscali Ping, but it must still use both lines

  @antonioabb 

So Policy Routing may be a solution for you. what's the Port Status in Load Balancing -- Online Detection after you set a policy routing rule.

  @gatewait 

both online, but doing some tests, I always surf with only one internet line, the one with low ping.  the other, despite being online, does not seem to be exploited.  later if I can attach screen of the page, maybe I'm doing something wrong

  @gatewait 

what am I doing wrong?

  @antonioabb 

Your configuration is fine, Policy Routing will allow traffic to go to the WAN you set up first, and there will be very little traffic after another WAN. Only when the primary WAN goes offline will the backup WAN be used.