Sizes from 100% to 149% use the 1X image for the backround.
Sizes over 150% use the 2X image for the backround.
On 150% the image looks sharp since 2x is used.
On 149% it looks blurry since 1x is used.
I would prefer to use the 2x image to scaling factors down to around 125%. The most part of the aliasing should be compansated by the linear interpolation and the image would look sharper.
Is there a setting in VSTGUI where i can define or change this?