Some pool owners are searching for weaknesses in the mining software to cheat you. My modded decred works best for high difficulty, but I can make a version that is excellent on low difficulty as well. Then you will get great stats at suprnova, and bad stats at yiimp.
no parameter used:
[2016-03-19 15:09:33] Starting on stratum+tcp://mine.zpool.ca:5744
[2016-03-19 15:09:33] NVML GPU monitoring enabled.
[2016-03-19 15:09:33] 1 miner thread started, using 'decred' algorithm
[2016-03-19 15:09:33]
Stratum difficulty set to 0.5[2016-03-19 15:09:33] mine.zpool.ca:5744 decred block 11855
[2016-03-19 15:09:36] GPU #1: EVGA GTX 750 Ti, 480.65 MH/s
[2016-03-19 15:09:44] GPU #1: EVGA GTX 750 Ti, 518.90 MH/s
[2016-03-19 15:09:48] GPU #1: EVGA GTX 750 Ti, 518.85 MH/s
[2016-03-19 15:09:48] accepted: 1/1 (100.00%), 506.13 MH/s yes!
ccminer/1.7.3 x decred 0.5 205.2 mh/s
exactly. you need d=1 or d=2 or up to get the correct results on the pool. But the miner is displaying the correct results. So you are contributing with 518MHASH and get payed for 200MHASH
ccminer/1.7.3 d=4 decred 4 879.6 mh/s
[2016-03-19 15:06:49] 1 miner thread started, using 'decred' algori
[2016-03-19 15:06:49] Stratum difficulty set to 4
[2016-03-19 15:06:49] mine.zpool.ca:5744 decred block 11854
[2016-03-19 15:06:51] GPU #0: EVGA GTX 960, 776.79 MH/s
[2016-03-19 15:06:56] GPU #0: EVGA GTX 960, 887.19 MH/s
[2016-03-19 15:07:01] GPU #0: EVGA GTX 960, 887.00 MH/s
[2016-03-19 15:07:01] mine.zpool.ca:5744 decred block 11855
[2016-03-19 15:07:05] GPU #0: EVGA GTX 960, 885.90 MH/s
[2016-03-19 15:07:10] GPU #0: EVGA GTX 960, 887.56 MH/s
[2016-03-19 15:07:15] GPU #0: EVGA GTX 960, 887.37 MH/s
[2016-03-19 15:07:20] GPU #0: EVGA GTX 960, 887.19 MH/s
[2016-03-19 15:07:25] GPU #0: EVGA GTX 960, 884.61 MH/s
[2016-03-19 15:07:26] GPU #0: EVGA GTX 960, 883.54 MH/s
[2016-03-19 15:07:26] accepted: 1/1 (100.00%), 874.13 MH/s yes!
[2016-03-19 15:07:27] GPU #0: EVGA GTX 960, 885.55 MH/s
[2016-03-19 15:07:27] accepted: 2/2 (100.00%), 875.27 MH/s yes!
[2016-03-19 15:07:29] GPU #0: EVGA GTX 960, 887.16 MH/s
[2016-03-19 15:07:29] accepted: 3/3 (100.00%), 876.35 MH/s yes!
Miners: 18tvS3deKZK5q4eTtPRWYeEMWmGmuErHgz
Summary Miners Shares Hashrate* Reject*
decred 2 0.0847% 1.3 gh/s
Details Extra Algo Diff ES** Hashrate* Reject*
ccminer/1.7.3 d=4 decred 4 938.2 mh/s
ccminer/1.7.3 d=4 decred 4 410.5 mh/s
[2016-03-19 15:23:08] GPU #1: EVGA GTX 750 Ti, 518.42 MH/s
[2016-03-19 15:23:09] accepted: 8/8 (100.00%), 518.47 MH/s yes!
[2016-03-19 15:23:17] GPU #1: EVGA GTX 750 Ti, 518.58 MH/s