Change renderscale via toolbar in VR

I am not sure if this has been discussed already. I found good grafic settings in Vr for my Hp G2 with an 9700K and Rtx 3080. I use TAA with High settings and only change the renderscale from 80 to 100 depending on where I am (80 airport, 100 cruise). It would be very helpful if I could change the rendescale via the toolbar. Appreciate your comments.