Very long miner "warming up" time
Hello!
First - sorry for my bad English.
I'am trying v2.2.2 and v2.3 (downloaded from master) - same result.
I have some nvidia rigs. Now i'am testing your software on one rig 6x1070 on zpool. All works perfect. But i have some problems with Alexis78 and Alexis78cuda9 miner. Some algos seems to have very long "warming up" time. What does it mean? When miner starts - it using not all available GPUs (1 or 2). Some time later it starts to use all GPUs. And this "some time" is more than 2 minutes on some algos. Problem algos for 1070 is: blakecoin, hsr, keccak, myr0gr, nist5, poly. If i wait more time 5+ minutes (setting -interval 300) - miner starts to use all GPUs. But 2-4 minutes my rig have no profit on these algos. Please have a look on attachment - Afterburner GPU load
![keccak](https://user-images.githubusercontent.com/31293967/34127019-9f938d8e-e44c-11e7-81cc-7f2299a40969.png)
There are no errors in system eventlog (no driver crash).

Other algos works fine for me.
If i use another miner for these algos - all works fine too. For example: comment keccak algo in CcminerAlexis78cuda9.ps1 and uncomment keccak in CcminerTpruvotcuda9.ps1 - all works perfect! And i have no "warming up" time - mining starts immediately on all GPUs.

I think it is Alexis78 and Alexis78cuda9 miner bugs. Maybe you will replace miners for these algos in future versions?
PS: Win10x64, driver 388.31, CPU G4400