CCR1009 - low single tcp tunnel performance?

[Paternot]

I use the mangle chain to divide traffic between two WANs, and the fasttrack doesn’t seen to cause problems with it.

I thought that routing-mark is per-packet, not per-connection. If you assign routing mark on connection level it’s gonna persist and be taken into account in routing rules?

I believe it is per connection. It is working for me, and the option is “mark connection”. True, it could use per-packet mark to do it, but I believe it doesn’t.