As @Rick-DC says you need SpeedFusion VPN. You can use a free FusionHub Solo license and host it in the cloud for $5/month build a SpeedFusion VPN tunnel from your B210 to the virtual FusionHub appliance and have seamless hot failover for your stream.
Thank you for your response @Rick-DC , i have already redcuced the health check intervel and all other settings to the minimum but i have always to wait few secondes beetwen the traffic transfer
i will accept it , i have just a last question please about your proposition of “Speed Fusion” i saw this service on my B210 network setting , is this service not integrated on my balance or i need to pay for it
Your B210 can do SPeedFusion VPN bonding - you don’t need any additional license for it.
Yes. you do. To seamlessly failover across multiple separate WAN connections (or to use multiple WAN connections at the same time as if they were one logic connection) requires some form of technology that can split up traffic that will be sent over those links and then puts it back together again at the other end.
Since the web sites and services you want to access likely don’t have Peplink SpeedFusion Enabled devices (yet), that means you need to recombine your traffic yourself somewhere on the internet and then forward that on from there to where it needs to go.
Your your setup becomes:
Balance 210 -> [SpeedFusion Bonding] -> FusionHub Virtual Appliance -> Internet
The FusionHub can be hosted anywhere in the cloud on a reliable fast internet connection (eg Azure, AWS, Vultr, Upcloud etc).
Loads of info on here about FusionHub hosting. Good luck!