From everything I have heard, Windows cannot handle more than 8 cards using the same driver. For example, 8 AMD and 4 NVIDIA cards should work, but 10 of the same card I don't think will work on Windows.
However, EthOS, linux, SimpleMiningOS etc. have been reported to work with 12 cards.
All of them are 12 NVIDIA Google P106, I have tried EthOs but black screen all the time
Do you mean that you can have 10 x p106 to work in Windows 10 without an issue? This is weird because windows driver should support maximum 8 cards in the same type only. Maybe the clue is on your setup, please tell us more details on your settings, nvidia driver version, etc?