Add PostFX to UI but not Anti Aliasing?

Hey
So I have one camera but the UI is unaffected by any volumes
I can make the UI be affected by post FX but then it also gets all the ingame FX which may be too much, also
it is then affected by camera anti aliasing, which looks unplayable in case of TAA
Ive tried all sorts of layer and volume mask things although maybe I did oversee something

Is there any trick that can be done there without taking a second camera and that performance overhead?