Well, you mean you will be installing dnscrypt-proxy. And that you hope the binaries works properly for your model router. I hope it does atleast, but I have no control over the binaries development since I am not officially apart of the dnscrypt-proxy development team. I do however maintain an installer that grants you access to using said binaries on you asuswrt-merlin router.
Let us now bring this thread back to topic for those users who wish to talk about FlexQoS usage specifically.