tweak net params for zdag
tweak net params for zdag

reduce delays and increase max tx in flight


Former-commit-id: d37c130215ccd9106a59d9c4ae97d2349aaf02f3
syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin2,syscoin/syscoin,syscoin/syscoin