XFCE blurs background and buttons on window scaling set to x2

On XFCE when I set window scaling to x2 I get the background and the window button icons blurred. What can I do ?
I tried display scaling before for this purpose, it make everything blur not only the background and the icons.
I need XFCE working as a DE for using raspberry pi as e multimedia player for TV.
Here’s how things are blurred.