[Game Client] League, 4k monitors, and Windows 7 DPI scaling

I have two 4k monitors. To be able to use them comfortably, I've set my DPI scaling in Windows to 166%.

When I try to run League borderless with the resolution set to the monitor's native resolution, League displays as extremely stretched across most of my second monitor. Changing the mode to fullscreen caused the game to bug splat. After changing it back to borderless, changing the resolution to a lower value resulted in the game being displayed horizontally centred between my two monitors and with the top of the window vertically centred, resulting in an unplayable window position.

Unrelated, but discovered at the same time, I ran into an issue with locking the mouse to the game window. I think this is probably due to the DPI scaling, but when I put the game into fullscreen mode I could always move the mouse over to my other monitor, regardless of if I toggled mouse locking (F9) or not.

So, to recap, the major bugs are:

• When DPI scaling is set above 100%, a borderless window is stretched larger than the specified resolution
• When DPI scaling is set above 100%, setting a fullscreen window to the monitor's native resolution causes a bug splat
• When changing resolutions using a borderless window with multiple monitors, the window's new position is such that the game is unplayable
• When DPI scaling is set above 100% and multiple monitors are in use, mouse locking does not work as expected.

If you need any logs or additional info, please let me know and I can submit them.