Multi WAN Timeouts

[bigops]

Is there a way to enable a timeout for a Multi-WAN setup.   The issue that I am trying to resolve is I have a site where the primary WAN link is not very stable during some times of the day.  Due to excessive packet losses Opnsense fails over to the secondary link, but then the packet losses disappear for a few cycles and the link switches back to the primary link.  What I need to configure is a time frame (say 15 minutes) where the packets are inspected if there is a fail-over to the secondary link and only if the circuit is OK during that time period should it switch back to the primary link