I'm mining DGB Skein running 2 rigs with a total hashrate of about 5.5GH/s.

I noticed that the payments started to get irregular, even though I mine at exactly the same speed the last 24 hours. The rigs have been running at full speed continously.

Here is a paste of the latest transactions with a strange gap between 13:00 and 13:30. Usually I get about 100 DGB per hour (and 8DGB every ~5 minutes). But now it was two hours between 100 DGB's. Why is that?

TX #    Date    TX Type    TX_ID(Payment Address)    Block #    Amount
17442895   2017-07-04 13:32:27   Don_Fee       4780953   -0.12570069
17442895   2017-07-04 13:32:27   Credit      4780953    8.25434531
17442644   2017-07-04 13:30:40   Don_Fee       4780943   -0.12578297
17442644   2017-07-04 13:30:40   Credit      4780943    8.25974803
17442429   2017-07-04 13:00:19   Debit_ATP   c40e45d8017f270a1eeb2710755040b06ccc5fef3986666612787a6016890c89(XXXXXXXXX)      -106.37834002
17442395   2017-07-04 13:00:17   Don_Fee       4780817   -0.12589340
17442395   2017-07-04 13:00:17   Credit      4780817    8.2669996
17442149   2017-07-04 12:52:19   Don_Fee       4780800   -0.12647057
17442149   2017-07-04 12:52:19   Credit      4780800    8.30490043