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, resulting in tearing regardless of settings until fullscreen is exited and reentered, 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.