Thanks for the new miner.  still have 2 main problems.

1. rig id isn't reflected at pool.  Still shows up as worker id "0", no matter what you put into config.json.

2.  Single gpu works ok. But soon as you mutithread it on single gpu or single thread on multiple gpus, it will spit out "duplicate shares" everytime share is found.  and banned.  Perhaps, internal checker for duplicates isn't working as intended.  Even on single threaded gpu, it will spit out duplicates share if difficulty is low enough.  i.e. when dev donate mode starts, half the shares are rejected/briefly banned because it connects to low difficulty port.

I find myself rig id is major problem for me to use my gpus at loudmining.

For your info, my AMD frontier editions gets 700ish hash at stock 1536/8 setting.

Edit: incident of really high duplicate shares found during the dev donation is because I had 2 miner, one for each gpu, pointed at 2 different pool.  So when dev donation started, since both miner has default rig id of 0, and from same IP address, they were colliding with each other, resulting in duplicate shares. Other than that, am still experiencing duplicate shares with 2 or more thread from same miner, and occasional duplicates out of no where.