Not all GPUs are starting immediately sometimes.
Please take a look at this picture, you can see that some of GPUs started with delay (gaps):
https://www.dropbox.com/s/8nrghq411ju2mm3/Screenshot%202017-08-18%2016.29.29.png?dl=0

I captured the log from miner: https://pastebin.com/rcYxTRby
There I see those gaps:
```
[2017-08-18 08:42:03] GPU#3:Intensity set to 31, 2147483648 cuda threads
[2017-08-18 08:42:03] GPU#6:Intensity set to 31, 2147483648 cuda threads
[2017-08-18 08:42:03] GPU#4:Intensity set to 31, 2147483648 cuda threads
[2017-08-18 08:42:04] GPU#0:Intensity set to 31, 2147483648 cuda threads
[2017-08-18 08:42:04] GPU#7:Intensity set to 31, 2147483648 cuda threads
....
[2017-08-18 08:42:43] GPU#5:Intensity set to 31, 2147483648 cuda threads
....
[2017-08-18 08:43:37] GPU#1:Intensity set to 31, 2147483648 cuda threads
[2017-08-18 08:45:26] GPU#2:Intensity set to 31, 2147483648 cuda threads
```
I am not sure where I need to submit this issue - here or somewhere else.