Karura - Just 3 peers?

My node has been running for days, it is constantly synching, it only has 3 peers, why?

# curl -H "Content-Type: application/json" -d '{"id":1, "jsonrpc":"2.0", "method": "system_health"}' http://localhost:80810
{"jsonrpc":"2.0","result":{"isSyncing":true,"peers":3,"shouldHavePeers":true},"id":1}

or 1 even ?!

{"jsonrpc":"2.0","result":{"isSyncing":false,"peers":1,"shouldHavePeers":true},"id":1}