Win32/NVidia: go fullscreen later than previous builds, to avoid vsync being ignored

It seems like vsync is ignored if we go fullscreen before showing the window, so moving it down a bit seems to help, at least on my system.

Also, it seems pointless to have the swap_control_tear checks running at all if they're disabled for now, so I turned them off.

May help https://github.com/hrydgard/ppsspp/issues/4440.