r.ScreenPercentage 50 does not work for me on XSX

Development Rendering
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1

Hello,

I am trying to use a native resolution of 1080p on XSX (to be upscaled to 4k with TSR), so I am trying to use r.ScreenPercentage 50. But my package renders at full 4k native resolution when I am using this setting.

What could I do please to make this work?

Thank you!