A note for those running the GUI on Windows, it will hog all your CPU power because its processes are set to Normal priority. This will slow down your other computer activities, even moving the mouse! The solution is to set the priority to Low.

A few of ways to do it:

• Task Manager
  Oening the Task Manager, go to the Details tab, find the process names "Koinos Miner.exe" and "koinos_miner.exe", then right-click on each of them, Set priority, Low.
• PowerShell
  You can easily do that with a PowerShell prompt with these two commands:

Get-WmiObject Win32_process -filter 'name = "koinos_miner.exe"' | foreach-object { $_.SetPriority(64) }
Get-WmiObject Win32_process -filter 'name = "koinos miner.exe"' | foreach-object { $_.SetPriority(64) }

SetPriority(64) means Low.

• In command prompt (or batch file)

wmic process where name="koinos miner.exe" CALL setpriority 64
wmic process where name="koinos_miner.exe" CALL setpriority 64

More on changing priority here https://www.tenforums.com/tutorials/89548-set-cpu-process-priority-applications-windows-10-a.html