In Windows 10, one selects scaling level for each monitor separately. In Windows 8.1, you could disable that by checking Let me choose one scaling level for all my displays
(screenshot in this question). How can you do that in Windows 10?
Background: I have a laptop, which I occasionally connect to various projectors / big monitors in various conference rooms. Some of these projectors have suggested scaling values of 150% which I don't like. Currently I mark each new projector as 100% (which requires logoff/logon to take effect), and I would like to avoid that.