the 'auto' setting just means to skip frames if it takes too much time to draw them
swap is just for the buffer swap time (I pretty much just measure how long the windows SwapBuffers command takes)
unfortunately it's dependent on windows and nearly impossible to sync at 60fps
the workaround right now is to start without vsync in fullscreen and hope that the triple buffering on the gpu kicks in
(which there is no control over - it's all up to the gpu driver)
so don't worry about this one: I know the cause but i yet to find a solution (apart from making 30fps the default) 😔