Monogame Hidef Limitation

I tried to use Hidef in monogame for having anti-aliasing application.
It happens that the screen size is reduced. I set the size to 1920 by 1080. It works with reach, but with hidef the size is put to a quarter of the screen.
Any suggestion?

Can you share your code? I don’t think it’s a reach vs HiDef thing. Are you changing the GraphicsProfile outside the game constructor?

Heh, this definitely AINT HiDef thing.