Use unbound to forward queries

Hello.
I just use unbound which listen 53 port to forward the queries to 127.0.0.1@5353(dnscrypt v2),but I find it works slowly.When unbound gets a request,it always sends the query to the root-server at first,and then it forward to 127.0.0.1@5353.How can I let unbound forward at first?
I want to use redis to cache,and I also want to use subnet. But the module-config only allows subnetcache or cachedb.
it is my conf: