I agree with you all that Linux is the preferred platform for mining. I have used Xubuntu since 12.04 and recently Hive OS myself.
But that is not what we are discussing, unless you are suggesting this as the solution to the problem.
For my part I got a small uptick in pool side hash rate once I "fixed" Windows. Would be interesting to know if others have made the same observation.
As a rule, miners appeared faster for Windows than for Linux. Now the situation is changing. Windows allows you to use the farm in parallel for other tasks, such as network storage, VPN service, etc.
The same can be done on Linux, but it's hard for miners to master even simple operating systems for mining.