Couldn't help myself... now rejects are about 32% with the defaults after an hour.
Will trial:
"scan-time": "1",
"expiry": "1",
"queue": "5",
Hmm.. My WUs dropped after these settings. I ll try the low mem command.
I get over 90% WU. There doesn't seem to be any right answer for everyone, you just have to see what works for your system. Plus you have to run it for more than 20 minutes to get your real rates.