At first, 3 blocks were found. No more. Afterwards, I'm just getting "booooo". Cancel the mine. I wait a few hours. And when I try again, the previous cycle is repeated.

[2017-08-15 20:27:52] NVML GPU monitoring enabled.
[2017-08-15 20:27:52] 2 miner threads started, using 'blake' algorithm.
[2017-08-15 20:27:52] blake block 695469, diff 11.91
[2017-08-15 20:27:53] GPU#0:Intensity set to 31, 2147483648 cuda threads
[2017-08-15 20:27:53] GPU#1:Intensity set to 31, 2147483648 cuda threads
[2017-08-15 20:27:55] [S/A/T]: 1/1/1, diff: 33.672, 9188.70MH/s yay!!!
[2017-08-15 20:27:55] blake block 695470, diff 11.46
[2017-08-15 20:28:00] [S/A/T]: 2/2/2, diff: 23.432, 9178.11MH/s yay!!!
[2017-08-15 20:28:00] blake block 695471, diff 11.02
[2017-08-15 20:28:06] [S/A/T]: 3/3/3, diff: 20.273, 9176.92MH/s yay!!!
[2017-08-15 20:28:06] blake block 695472, diff 10.59
[2017-08-15 20:28:13] [S/A/T]: 4/3/4, diff: 21.706, 9167.12MH/s booooo
[2017-08-15 20:28:16] [S/A/T]: 5/3/5, diff: 184.855, 9156.97MH/s booooo
[2017-08-15 20:28:17] [S/A/T]: 6/3/6, diff: 18.833, 9156.66MH/s booooo
[2017-08-15 20:28:22] GPU#1:ASUS GTX 1080 Ti, 4642.02MH/s
[2017-08-15 20:28:22] GPU#0:ASUS GTX 1080 Ti, 4540.98MH/s
[2017-08-15 20:28:27] [S/A/T]: 7/3/7, diff: 42.589, 9145.34MH/s booooo