I only use CCCP and it works. It renders videos, it renders subtitles.

I haven't had to touch anything since.

I have noticed something weird on my new installation of W10 though. Scrolling in MPC with the cursor on the video panel does the following:

mouse wheel up = volume up
mouse wheel down = volume down

Meanwhile, scrolling the wheel when the cursor is on the control panel of the window does the opposite. That is:

mouse wheel up = volume down
mouse wheel down = volume up.