Hi everyone,
1 month ago I had 2 wans and I was using them as load balance and I had no problems but due to capacity problems I bought a third line and started using it as 3 wan load balance and facebook videos started to freeze and buffer. I did not have such a problem when I had two wan lines.
/ip firewall mangle add action=change-mss chain=forward new-mss=clamp-to-pmtu passthrough=yes protocol=tcp tcp-flags=syn
this rule is also attached.
Thank you in advance.
Have a good day.