DNS Service timeout until restart

Hi there. As the topic says, i'm having this problem sometime on my machine. Suddenly i lost the ability to resolve dns queries becouse the dnscrypt-proxy service stop answering. This until i manually restart the service. Any clue? Thank you!
This is the error messages i got:
```
nslookup google.it
DNS request timed out.
timeout was 2 seconds.
Server: UnKnown
Address: 127.0.0.1

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** request timed out to UnKnown
```